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# -*- coding: utf-8 -*-
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# -*- coding: utf-8 -*-
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"""
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"""
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Verbose and colourful traceback formatting.
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Verbose and colourful traceback formatting.
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**ColorTB**
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**ColorTB**
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I've always found it a bit hard to visually parse tracebacks in Python. The
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I've always found it a bit hard to visually parse tracebacks in Python. The
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ColorTB class is a solution to that problem. It colors the different parts of a
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ColorTB class is a solution to that problem. It colors the different parts of a
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traceback in a manner similar to what you would expect from a syntax-highlighting
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traceback in a manner similar to what you would expect from a syntax-highlighting
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text editor.
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text editor.
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Installation instructions for ColorTB::
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Installation instructions for ColorTB::
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import sys,ultratb
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import sys,ultratb
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sys.excepthook = ultratb.ColorTB()
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sys.excepthook = ultratb.ColorTB()
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**VerboseTB**
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**VerboseTB**
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I've also included a port of Ka-Ping Yee's "cgitb.py" that produces all kinds
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I've also included a port of Ka-Ping Yee's "cgitb.py" that produces all kinds
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of useful info when a traceback occurs. Ping originally had it spit out HTML
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of useful info when a traceback occurs. Ping originally had it spit out HTML
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and intended it for CGI programmers, but why should they have all the fun? I
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and intended it for CGI programmers, but why should they have all the fun? I
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altered it to spit out colored text to the terminal. It's a bit overwhelming,
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altered it to spit out colored text to the terminal. It's a bit overwhelming,
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but kind of neat, and maybe useful for long-running programs that you believe
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but kind of neat, and maybe useful for long-running programs that you believe
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are bug-free. If a crash *does* occur in that type of program you want details.
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are bug-free. If a crash *does* occur in that type of program you want details.
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Give it a shot--you'll love it or you'll hate it.
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Give it a shot--you'll love it or you'll hate it.
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.. note::
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.. note::
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The Verbose mode prints the variables currently visible where the exception
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The Verbose mode prints the variables currently visible where the exception
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happened (shortening their strings if too long). This can potentially be
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happened (shortening their strings if too long). This can potentially be
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very slow, if you happen to have a huge data structure whose string
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very slow, if you happen to have a huge data structure whose string
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representation is complex to compute. Your computer may appear to freeze for
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representation is complex to compute. Your computer may appear to freeze for
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a while with cpu usage at 100%. If this occurs, you can cancel the traceback
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a while with cpu usage at 100%. If this occurs, you can cancel the traceback
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with Ctrl-C (maybe hitting it more than once).
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with Ctrl-C (maybe hitting it more than once).
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If you encounter this kind of situation often, you may want to use the
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If you encounter this kind of situation often, you may want to use the
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Verbose_novars mode instead of the regular Verbose, which avoids formatting
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Verbose_novars mode instead of the regular Verbose, which avoids formatting
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variables (but otherwise includes the information and context given by
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variables (but otherwise includes the information and context given by
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Verbose).
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Verbose).
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.. note::
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.. note::
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The verbose mode print all variables in the stack, which means it can
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The verbose mode print all variables in the stack, which means it can
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potentially leak sensitive information like access keys, or unencrypted
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potentially leak sensitive information like access keys, or unencrypted
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password.
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password.
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Installation instructions for VerboseTB::
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Installation instructions for VerboseTB::
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import sys,ultratb
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import sys,ultratb
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sys.excepthook = ultratb.VerboseTB()
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sys.excepthook = ultratb.VerboseTB()
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Note: Much of the code in this module was lifted verbatim from the standard
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Note: Much of the code in this module was lifted verbatim from the standard
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library module 'traceback.py' and Ka-Ping Yee's 'cgitb.py'.
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library module 'traceback.py' and Ka-Ping Yee's 'cgitb.py'.
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Color schemes
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Color schemes
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-------------
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-------------
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The colors are defined in the class TBTools through the use of the
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The colors are defined in the class TBTools through the use of the
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ColorSchemeTable class. Currently the following exist:
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ColorSchemeTable class. Currently the following exist:
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- NoColor: allows all of this module to be used in any terminal (the color
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- NoColor: allows all of this module to be used in any terminal (the color
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escapes are just dummy blank strings).
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escapes are just dummy blank strings).
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- Linux: is meant to look good in a terminal like the Linux console (black
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- Linux: is meant to look good in a terminal like the Linux console (black
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or very dark background).
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or very dark background).
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- LightBG: similar to Linux but swaps dark/light colors to be more readable
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- LightBG: similar to Linux but swaps dark/light colors to be more readable
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in light background terminals.
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in light background terminals.
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- Neutral: a neutral color scheme that should be readable on both light and
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- Neutral: a neutral color scheme that should be readable on both light and
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dark background
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dark background
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You can implement other color schemes easily, the syntax is fairly
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You can implement other color schemes easily, the syntax is fairly
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self-explanatory. Please send back new schemes you develop to the author for
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self-explanatory. Please send back new schemes you develop to the author for
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possible inclusion in future releases.
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possible inclusion in future releases.
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Inheritance diagram:
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Inheritance diagram:
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.. inheritance-diagram:: IPython.core.ultratb
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.. inheritance-diagram:: IPython.core.ultratb
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:parts: 3
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:parts: 3
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"""
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"""
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#*****************************************************************************
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#*****************************************************************************
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# Copyright (C) 2001 Nathaniel Gray <n8gray@caltech.edu>
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# Copyright (C) 2001 Nathaniel Gray <n8gray@caltech.edu>
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# Copyright (C) 2001-2004 Fernando Perez <fperez@colorado.edu>
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# Copyright (C) 2001-2004 Fernando Perez <fperez@colorado.edu>
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#
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#
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# Distributed under the terms of the BSD License. The full license is in
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# Distributed under the terms of the BSD License. The full license is in
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# the file COPYING, distributed as part of this software.
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# the file COPYING, distributed as part of this software.
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#*****************************************************************************
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#*****************************************************************************
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import inspect
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import inspect
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import linecache
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import linecache
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import pydoc
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import pydoc
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import sys
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import sys
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import time
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import time
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import traceback
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import traceback
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import stack_data
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import stack_data
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from pygments.formatters.terminal256 import Terminal256Formatter
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from pygments.formatters.terminal256 import Terminal256Formatter
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from pygments.styles import get_style_by_name
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from pygments.styles import get_style_by_name
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# IPython's own modules
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# IPython's own modules
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from IPython import get_ipython
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from IPython import get_ipython
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from IPython.core import debugger
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from IPython.core import debugger
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from IPython.core.display_trap import DisplayTrap
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from IPython.core.display_trap import DisplayTrap
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from IPython.core.excolors import exception_colors
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from IPython.core.excolors import exception_colors
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from IPython.utils import path as util_path
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from IPython.utils import path as util_path
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from IPython.utils import py3compat
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from IPython.utils import py3compat
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from IPython.utils.terminal import get_terminal_size
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from IPython.utils.terminal import get_terminal_size
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import IPython.utils.colorable as colorable
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import IPython.utils.colorable as colorable
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# Globals
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# Globals
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# amount of space to put line numbers before verbose tracebacks
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# amount of space to put line numbers before verbose tracebacks
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INDENT_SIZE = 8
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INDENT_SIZE = 8
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# Default color scheme. This is used, for example, by the traceback
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# Default color scheme. This is used, for example, by the traceback
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# formatter. When running in an actual IPython instance, the user's rc.colors
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# formatter. When running in an actual IPython instance, the user's rc.colors
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# value is used, but having a module global makes this functionality available
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# value is used, but having a module global makes this functionality available
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# to users of ultratb who are NOT running inside ipython.
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# to users of ultratb who are NOT running inside ipython.
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DEFAULT_SCHEME = 'NoColor'
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DEFAULT_SCHEME = 'NoColor'
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# ---------------------------------------------------------------------------
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# ---------------------------------------------------------------------------
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# Code begins
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# Code begins
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# Helper function -- largely belongs to VerboseTB, but we need the same
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# Helper function -- largely belongs to VerboseTB, but we need the same
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# functionality to produce a pseudo verbose TB for SyntaxErrors, so that they
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# functionality to produce a pseudo verbose TB for SyntaxErrors, so that they
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# can be recognized properly by ipython.el's py-traceback-line-re
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# can be recognized properly by ipython.el's py-traceback-line-re
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# (SyntaxErrors have to be treated specially because they have no traceback)
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# (SyntaxErrors have to be treated specially because they have no traceback)
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def _format_traceback_lines(lines, Colors, has_colors, lvals):
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def _format_traceback_lines(lines, Colors, has_colors, lvals):
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"""
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"""
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Format tracebacks lines with pointing arrow, leading numbers...
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Format tracebacks lines with pointing arrow, leading numbers...
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Parameters
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Parameters
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----------
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----------
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lines : list[Line]
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lines : list[Line]
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Colors
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Colors
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ColorScheme used.
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ColorScheme used.
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lvals : str
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lvals : str
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Values of local variables, already colored, to inject just after the error line.
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Values of local variables, already colored, to inject just after the error line.
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"""
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"""
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numbers_width = INDENT_SIZE - 1
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numbers_width = INDENT_SIZE - 1
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res = []
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res = []
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for stack_line in lines:
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for stack_line in lines:
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if stack_line is stack_data.LINE_GAP:
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if stack_line is stack_data.LINE_GAP:
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res.append('%s (...)%s\n' % (Colors.linenoEm, Colors.Normal))
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res.append('%s (...)%s\n' % (Colors.linenoEm, Colors.Normal))
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continue
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continue
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line = stack_line.render(pygmented=has_colors).rstrip('\n') + '\n'
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line = stack_line.render(pygmented=has_colors).rstrip('\n') + '\n'
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lineno = stack_line.lineno
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lineno = stack_line.lineno
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if stack_line.is_current:
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if stack_line.is_current:
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# This is the line with the error
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# This is the line with the error
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pad = numbers_width - len(str(lineno))
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pad = numbers_width - len(str(lineno))
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num = '%s%s' % (debugger.make_arrow(pad), str(lineno))
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num = '%s%s' % (debugger.make_arrow(pad), str(lineno))
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start_color = Colors.linenoEm
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start_color = Colors.linenoEm
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else:
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else:
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num = '%*s' % (numbers_width, lineno)
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num = '%*s' % (numbers_width, lineno)
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start_color = Colors.lineno
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start_color = Colors.lineno
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line = '%s%s%s %s' % (start_color, num, Colors.Normal, line)
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line = '%s%s%s %s' % (start_color, num, Colors.Normal, line)
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res.append(line)
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res.append(line)
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if lvals and stack_line.is_current:
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if lvals and stack_line.is_current:
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res.append(lvals + '\n')
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res.append(lvals + '\n')
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return res
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return res
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def _format_filename(file, ColorFilename, ColorNormal):
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def _format_filename(file, ColorFilename, ColorNormal):
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"""
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"""
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Format filename lines with `In [n]` if it's the nth code cell or `File *.py` if it's a module.
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Format filename lines with `In [n]` if it's the nth code cell or `File *.py` if it's a module.
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Parameters
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Parameters
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----------
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----------
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file : str
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file : str
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ColorFilename
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ColorFilename
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ColorScheme's filename coloring to be used.
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ColorScheme's filename coloring to be used.
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ColorNormal
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ColorNormal
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ColorScheme's normal coloring to be used.
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ColorScheme's normal coloring to be used.
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"""
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"""
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ipinst = get_ipython()
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ipinst = get_ipython()
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if ipinst is not None and file in ipinst.compile._filename_map:
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if ipinst is not None and file in ipinst.compile._filename_map:
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file = "[%s]" % ipinst.compile._filename_map[file]
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file = "[%s]" % ipinst.compile._filename_map[file]
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tpl_link = "In %s%%s%s" % (ColorFilename, ColorNormal)
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tpl_link = "Input %sIn %%s%s" % (ColorFilename, ColorNormal)
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else:
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else:
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file = util_path.compress_user(
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file = util_path.compress_user(
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py3compat.cast_unicode(file, util_path.fs_encoding)
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py3compat.cast_unicode(file, util_path.fs_encoding)
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)
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)
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tpl_link = "File %s%%s%s" % (ColorFilename, ColorNormal)
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tpl_link = "File %s%%s%s" % (ColorFilename, ColorNormal)
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return tpl_link % file
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return tpl_link % file
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#---------------------------------------------------------------------------
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#---------------------------------------------------------------------------
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# Module classes
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# Module classes
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class TBTools(colorable.Colorable):
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class TBTools(colorable.Colorable):
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"""Basic tools used by all traceback printer classes."""
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"""Basic tools used by all traceback printer classes."""
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# Number of frames to skip when reporting tracebacks
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# Number of frames to skip when reporting tracebacks
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tb_offset = 0
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tb_offset = 0
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def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None, config=None):
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def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None, config=None):
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# Whether to call the interactive pdb debugger after printing
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# Whether to call the interactive pdb debugger after printing
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# tracebacks or not
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# tracebacks or not
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super(TBTools, self).__init__(parent=parent, config=config)
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super(TBTools, self).__init__(parent=parent, config=config)
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self.call_pdb = call_pdb
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self.call_pdb = call_pdb
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# Output stream to write to. Note that we store the original value in
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# Output stream to write to. Note that we store the original value in
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# a private attribute and then make the public ostream a property, so
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# a private attribute and then make the public ostream a property, so
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# that we can delay accessing sys.stdout until runtime. The way
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# that we can delay accessing sys.stdout until runtime. The way
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# things are written now, the sys.stdout object is dynamically managed
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# things are written now, the sys.stdout object is dynamically managed
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# so a reference to it should NEVER be stored statically. This
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# so a reference to it should NEVER be stored statically. This
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# property approach confines this detail to a single location, and all
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# property approach confines this detail to a single location, and all
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# subclasses can simply access self.ostream for writing.
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# subclasses can simply access self.ostream for writing.
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self._ostream = ostream
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self._ostream = ostream
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# Create color table
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# Create color table
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self.color_scheme_table = exception_colors()
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self.color_scheme_table = exception_colors()
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self.set_colors(color_scheme)
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self.set_colors(color_scheme)
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self.old_scheme = color_scheme # save initial value for toggles
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self.old_scheme = color_scheme # save initial value for toggles
|
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|
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if call_pdb:
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if call_pdb:
|
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|
self.pdb = debugger.Pdb()
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|
self.pdb = debugger.Pdb()
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else:
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else:
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|
self.pdb = None
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self.pdb = None
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|
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|
def _get_ostream(self):
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|
def _get_ostream(self):
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"""Output stream that exceptions are written to.
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"""Output stream that exceptions are written to.
|
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|
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233
|
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Valid values are:
|
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|
Valid values are:
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|
|
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- None: the default, which means that IPython will dynamically resolve
|
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- None: the default, which means that IPython will dynamically resolve
|
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to sys.stdout. This ensures compatibility with most tools, including
|
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to sys.stdout. This ensures compatibility with most tools, including
|
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Windows (where plain stdout doesn't recognize ANSI escapes).
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Windows (where plain stdout doesn't recognize ANSI escapes).
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|
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- Any object with 'write' and 'flush' attributes.
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- Any object with 'write' and 'flush' attributes.
|
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|
"""
|
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|
"""
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|
return sys.stdout if self._ostream is None else self._ostream
|
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|
return sys.stdout if self._ostream is None else self._ostream
|
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243
|
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244
|
def _set_ostream(self, val):
|
|
244
|
def _set_ostream(self, val):
|
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|
assert val is None or (hasattr(val, 'write') and hasattr(val, 'flush'))
|
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|
assert val is None or (hasattr(val, 'write') and hasattr(val, 'flush'))
|
|
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|
self._ostream = val
|
|
246
|
self._ostream = val
|
|
247
|
|
|
247
|
|
|
248
|
ostream = property(_get_ostream, _set_ostream)
|
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|
ostream = property(_get_ostream, _set_ostream)
|
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249
|
|
|
249
|
|
|
250
|
def get_parts_of_chained_exception(self, evalue):
|
|
250
|
def get_parts_of_chained_exception(self, evalue):
|
|
251
|
def get_chained_exception(exception_value):
|
|
251
|
def get_chained_exception(exception_value):
|
|
252
|
cause = getattr(exception_value, '__cause__', None)
|
|
252
|
cause = getattr(exception_value, '__cause__', None)
|
|
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|
if cause:
|
|
253
|
if cause:
|
|
254
|
return cause
|
|
254
|
return cause
|
|
255
|
if getattr(exception_value, '__suppress_context__', False):
|
|
255
|
if getattr(exception_value, '__suppress_context__', False):
|
|
256
|
return None
|
|
256
|
return None
|
|
257
|
return getattr(exception_value, '__context__', None)
|
|
257
|
return getattr(exception_value, '__context__', None)
|
|
258
|
|
|
258
|
|
|
259
|
chained_evalue = get_chained_exception(evalue)
|
|
259
|
chained_evalue = get_chained_exception(evalue)
|
|
260
|
|
|
260
|
|
|
261
|
if chained_evalue:
|
|
261
|
if chained_evalue:
|
|
262
|
return chained_evalue.__class__, chained_evalue, chained_evalue.__traceback__
|
|
262
|
return chained_evalue.__class__, chained_evalue, chained_evalue.__traceback__
|
|
263
|
|
|
263
|
|
|
264
|
def prepare_chained_exception_message(self, cause):
|
|
264
|
def prepare_chained_exception_message(self, cause):
|
|
265
|
direct_cause = "\nThe above exception was the direct cause of the following exception:\n"
|
|
265
|
direct_cause = "\nThe above exception was the direct cause of the following exception:\n"
|
|
266
|
exception_during_handling = "\nDuring handling of the above exception, another exception occurred:\n"
|
|
266
|
exception_during_handling = "\nDuring handling of the above exception, another exception occurred:\n"
|
|
267
|
|
|
267
|
|
|
268
|
if cause:
|
|
268
|
if cause:
|
|
269
|
message = [[direct_cause]]
|
|
269
|
message = [[direct_cause]]
|
|
270
|
else:
|
|
270
|
else:
|
|
271
|
message = [[exception_during_handling]]
|
|
271
|
message = [[exception_during_handling]]
|
|
272
|
return message
|
|
272
|
return message
|
|
273
|
|
|
273
|
|
|
274
|
@property
|
|
274
|
@property
|
|
275
|
def has_colors(self):
|
|
275
|
def has_colors(self):
|
|
276
|
return self.color_scheme_table.active_scheme_name.lower() != "nocolor"
|
|
276
|
return self.color_scheme_table.active_scheme_name.lower() != "nocolor"
|
|
277
|
|
|
277
|
|
|
278
|
def set_colors(self, *args, **kw):
|
|
278
|
def set_colors(self, *args, **kw):
|
|
279
|
"""Shorthand access to the color table scheme selector method."""
|
|
279
|
"""Shorthand access to the color table scheme selector method."""
|
|
280
|
|
|
280
|
|
|
281
|
# Set own color table
|
|
281
|
# Set own color table
|
|
282
|
self.color_scheme_table.set_active_scheme(*args, **kw)
|
|
282
|
self.color_scheme_table.set_active_scheme(*args, **kw)
|
|
283
|
# for convenience, set Colors to the active scheme
|
|
283
|
# for convenience, set Colors to the active scheme
|
|
284
|
self.Colors = self.color_scheme_table.active_colors
|
|
284
|
self.Colors = self.color_scheme_table.active_colors
|
|
285
|
# Also set colors of debugger
|
|
285
|
# Also set colors of debugger
|
|
286
|
if hasattr(self, 'pdb') and self.pdb is not None:
|
|
286
|
if hasattr(self, 'pdb') and self.pdb is not None:
|
|
287
|
self.pdb.set_colors(*args, **kw)
|
|
287
|
self.pdb.set_colors(*args, **kw)
|
|
288
|
|
|
288
|
|
|
289
|
def color_toggle(self):
|
|
289
|
def color_toggle(self):
|
|
290
|
"""Toggle between the currently active color scheme and NoColor."""
|
|
290
|
"""Toggle between the currently active color scheme and NoColor."""
|
|
291
|
|
|
291
|
|
|
292
|
if self.color_scheme_table.active_scheme_name == 'NoColor':
|
|
292
|
if self.color_scheme_table.active_scheme_name == 'NoColor':
|
|
293
|
self.color_scheme_table.set_active_scheme(self.old_scheme)
|
|
293
|
self.color_scheme_table.set_active_scheme(self.old_scheme)
|
|
294
|
self.Colors = self.color_scheme_table.active_colors
|
|
294
|
self.Colors = self.color_scheme_table.active_colors
|
|
295
|
else:
|
|
295
|
else:
|
|
296
|
self.old_scheme = self.color_scheme_table.active_scheme_name
|
|
296
|
self.old_scheme = self.color_scheme_table.active_scheme_name
|
|
297
|
self.color_scheme_table.set_active_scheme('NoColor')
|
|
297
|
self.color_scheme_table.set_active_scheme('NoColor')
|
|
298
|
self.Colors = self.color_scheme_table.active_colors
|
|
298
|
self.Colors = self.color_scheme_table.active_colors
|
|
299
|
|
|
299
|
|
|
300
|
def stb2text(self, stb):
|
|
300
|
def stb2text(self, stb):
|
|
301
|
"""Convert a structured traceback (a list) to a string."""
|
|
301
|
"""Convert a structured traceback (a list) to a string."""
|
|
302
|
return '\n'.join(stb)
|
|
302
|
return '\n'.join(stb)
|
|
303
|
|
|
303
|
|
|
304
|
def text(self, etype, value, tb, tb_offset=None, context=5):
|
|
304
|
def text(self, etype, value, tb, tb_offset=None, context=5):
|
|
305
|
"""Return formatted traceback.
|
|
305
|
"""Return formatted traceback.
|
|
306
|
|
|
306
|
|
|
307
|
Subclasses may override this if they add extra arguments.
|
|
307
|
Subclasses may override this if they add extra arguments.
|
|
308
|
"""
|
|
308
|
"""
|
|
309
|
tb_list = self.structured_traceback(etype, value, tb,
|
|
309
|
tb_list = self.structured_traceback(etype, value, tb,
|
|
310
|
tb_offset, context)
|
|
310
|
tb_offset, context)
|
|
311
|
return self.stb2text(tb_list)
|
|
311
|
return self.stb2text(tb_list)
|
|
312
|
|
|
312
|
|
|
313
|
def structured_traceback(self, etype, evalue, tb, tb_offset=None,
|
|
313
|
def structured_traceback(self, etype, evalue, tb, tb_offset=None,
|
|
314
|
context=5, mode=None):
|
|
314
|
context=5, mode=None):
|
|
315
|
"""Return a list of traceback frames.
|
|
315
|
"""Return a list of traceback frames.
|
|
316
|
|
|
316
|
|
|
317
|
Must be implemented by each class.
|
|
317
|
Must be implemented by each class.
|
|
318
|
"""
|
|
318
|
"""
|
|
319
|
raise NotImplementedError()
|
|
319
|
raise NotImplementedError()
|
|
320
|
|
|
320
|
|
|
321
|
|
|
321
|
|
|
322
|
#---------------------------------------------------------------------------
|
|
322
|
#---------------------------------------------------------------------------
|
|
323
|
class ListTB(TBTools):
|
|
323
|
class ListTB(TBTools):
|
|
324
|
"""Print traceback information from a traceback list, with optional color.
|
|
324
|
"""Print traceback information from a traceback list, with optional color.
|
|
325
|
|
|
325
|
|
|
326
|
Calling requires 3 arguments: (etype, evalue, elist)
|
|
326
|
Calling requires 3 arguments: (etype, evalue, elist)
|
|
327
|
as would be obtained by::
|
|
327
|
as would be obtained by::
|
|
328
|
|
|
328
|
|
|
329
|
etype, evalue, tb = sys.exc_info()
|
|
329
|
etype, evalue, tb = sys.exc_info()
|
|
330
|
if tb:
|
|
330
|
if tb:
|
|
331
|
elist = traceback.extract_tb(tb)
|
|
331
|
elist = traceback.extract_tb(tb)
|
|
332
|
else:
|
|
332
|
else:
|
|
333
|
elist = None
|
|
333
|
elist = None
|
|
334
|
|
|
334
|
|
|
335
|
It can thus be used by programs which need to process the traceback before
|
|
335
|
It can thus be used by programs which need to process the traceback before
|
|
336
|
printing (such as console replacements based on the code module from the
|
|
336
|
printing (such as console replacements based on the code module from the
|
|
337
|
standard library).
|
|
337
|
standard library).
|
|
338
|
|
|
338
|
|
|
339
|
Because they are meant to be called without a full traceback (only a
|
|
339
|
Because they are meant to be called without a full traceback (only a
|
|
340
|
list), instances of this class can't call the interactive pdb debugger."""
|
|
340
|
list), instances of this class can't call the interactive pdb debugger."""
|
|
341
|
|
|
341
|
|
|
342
|
def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None, config=None):
|
|
342
|
def __init__(self, color_scheme='NoColor', call_pdb=False, ostream=None, parent=None, config=None):
|
|
343
|
TBTools.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
|
|
343
|
TBTools.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
|
|
344
|
ostream=ostream, parent=parent,config=config)
|
|
344
|
ostream=ostream, parent=parent,config=config)
|
|
345
|
|
|
345
|
|
|
346
|
def __call__(self, etype, value, elist):
|
|
346
|
def __call__(self, etype, value, elist):
|
|
347
|
self.ostream.flush()
|
|
347
|
self.ostream.flush()
|
|
348
|
self.ostream.write(self.text(etype, value, elist))
|
|
348
|
self.ostream.write(self.text(etype, value, elist))
|
|
349
|
self.ostream.write('\n')
|
|
349
|
self.ostream.write('\n')
|
|
350
|
|
|
350
|
|
|
351
|
def _extract_tb(self, tb):
|
|
351
|
def _extract_tb(self, tb):
|
|
352
|
if tb:
|
|
352
|
if tb:
|
|
353
|
return traceback.extract_tb(tb)
|
|
353
|
return traceback.extract_tb(tb)
|
|
354
|
else:
|
|
354
|
else:
|
|
355
|
return None
|
|
355
|
return None
|
|
356
|
|
|
356
|
|
|
357
|
def structured_traceback(self, etype, evalue, etb=None, tb_offset=None,
|
|
357
|
def structured_traceback(self, etype, evalue, etb=None, tb_offset=None,
|
|
358
|
context=5):
|
|
358
|
context=5):
|
|
359
|
"""Return a color formatted string with the traceback info.
|
|
359
|
"""Return a color formatted string with the traceback info.
|
|
360
|
|
|
360
|
|
|
361
|
Parameters
|
|
361
|
Parameters
|
|
362
|
----------
|
|
362
|
----------
|
|
363
|
etype : exception type
|
|
363
|
etype : exception type
|
|
364
|
Type of the exception raised.
|
|
364
|
Type of the exception raised.
|
|
365
|
evalue : object
|
|
365
|
evalue : object
|
|
366
|
Data stored in the exception
|
|
366
|
Data stored in the exception
|
|
367
|
etb : object
|
|
367
|
etb : object
|
|
368
|
If list: List of frames, see class docstring for details.
|
|
368
|
If list: List of frames, see class docstring for details.
|
|
369
|
If Traceback: Traceback of the exception.
|
|
369
|
If Traceback: Traceback of the exception.
|
|
370
|
tb_offset : int, optional
|
|
370
|
tb_offset : int, optional
|
|
371
|
Number of frames in the traceback to skip. If not given, the
|
|
371
|
Number of frames in the traceback to skip. If not given, the
|
|
372
|
instance evalue is used (set in constructor).
|
|
372
|
instance evalue is used (set in constructor).
|
|
373
|
context : int, optional
|
|
373
|
context : int, optional
|
|
374
|
Number of lines of context information to print.
|
|
374
|
Number of lines of context information to print.
|
|
375
|
|
|
375
|
|
|
376
|
Returns
|
|
376
|
Returns
|
|
377
|
-------
|
|
377
|
-------
|
|
378
|
String with formatted exception.
|
|
378
|
String with formatted exception.
|
|
379
|
"""
|
|
379
|
"""
|
|
380
|
# This is a workaround to get chained_exc_ids in recursive calls
|
|
380
|
# This is a workaround to get chained_exc_ids in recursive calls
|
|
381
|
# etb should not be a tuple if structured_traceback is not recursive
|
|
381
|
# etb should not be a tuple if structured_traceback is not recursive
|
|
382
|
if isinstance(etb, tuple):
|
|
382
|
if isinstance(etb, tuple):
|
|
383
|
etb, chained_exc_ids = etb
|
|
383
|
etb, chained_exc_ids = etb
|
|
384
|
else:
|
|
384
|
else:
|
|
385
|
chained_exc_ids = set()
|
|
385
|
chained_exc_ids = set()
|
|
386
|
|
|
386
|
|
|
387
|
if isinstance(etb, list):
|
|
387
|
if isinstance(etb, list):
|
|
388
|
elist = etb
|
|
388
|
elist = etb
|
|
389
|
elif etb is not None:
|
|
389
|
elif etb is not None:
|
|
390
|
elist = self._extract_tb(etb)
|
|
390
|
elist = self._extract_tb(etb)
|
|
391
|
else:
|
|
391
|
else:
|
|
392
|
elist = []
|
|
392
|
elist = []
|
|
393
|
tb_offset = self.tb_offset if tb_offset is None else tb_offset
|
|
393
|
tb_offset = self.tb_offset if tb_offset is None else tb_offset
|
|
394
|
Colors = self.Colors
|
|
394
|
Colors = self.Colors
|
|
395
|
out_list = []
|
|
395
|
out_list = []
|
|
396
|
if elist:
|
|
396
|
if elist:
|
|
397
|
|
|
397
|
|
|
398
|
if tb_offset and len(elist) > tb_offset:
|
|
398
|
if tb_offset and len(elist) > tb_offset:
|
|
399
|
elist = elist[tb_offset:]
|
|
399
|
elist = elist[tb_offset:]
|
|
400
|
|
|
400
|
|
|
401
|
out_list.append('Traceback %s(most recent call last)%s:' %
|
|
401
|
out_list.append('Traceback %s(most recent call last)%s:' %
|
|
402
|
(Colors.normalEm, Colors.Normal) + '\n')
|
|
402
|
(Colors.normalEm, Colors.Normal) + '\n')
|
|
403
|
out_list.extend(self._format_list(elist))
|
|
403
|
out_list.extend(self._format_list(elist))
|
|
404
|
# The exception info should be a single entry in the list.
|
|
404
|
# The exception info should be a single entry in the list.
|
|
405
|
lines = ''.join(self._format_exception_only(etype, evalue))
|
|
405
|
lines = ''.join(self._format_exception_only(etype, evalue))
|
|
406
|
out_list.append(lines)
|
|
406
|
out_list.append(lines)
|
|
407
|
|
|
407
|
|
|
408
|
exception = self.get_parts_of_chained_exception(evalue)
|
|
408
|
exception = self.get_parts_of_chained_exception(evalue)
|
|
409
|
|
|
409
|
|
|
410
|
if exception and not id(exception[1]) in chained_exc_ids:
|
|
410
|
if exception and not id(exception[1]) in chained_exc_ids:
|
|
411
|
chained_exception_message = self.prepare_chained_exception_message(
|
|
411
|
chained_exception_message = self.prepare_chained_exception_message(
|
|
412
|
evalue.__cause__)[0]
|
|
412
|
evalue.__cause__)[0]
|
|
413
|
etype, evalue, etb = exception
|
|
413
|
etype, evalue, etb = exception
|
|
414
|
# Trace exception to avoid infinite 'cause' loop
|
|
414
|
# Trace exception to avoid infinite 'cause' loop
|
|
415
|
chained_exc_ids.add(id(exception[1]))
|
|
415
|
chained_exc_ids.add(id(exception[1]))
|
|
416
|
chained_exceptions_tb_offset = 0
|
|
416
|
chained_exceptions_tb_offset = 0
|
|
417
|
out_list = (
|
|
417
|
out_list = (
|
|
418
|
self.structured_traceback(
|
|
418
|
self.structured_traceback(
|
|
419
|
etype, evalue, (etb, chained_exc_ids),
|
|
419
|
etype, evalue, (etb, chained_exc_ids),
|
|
420
|
chained_exceptions_tb_offset, context)
|
|
420
|
chained_exceptions_tb_offset, context)
|
|
421
|
+ chained_exception_message
|
|
421
|
+ chained_exception_message
|
|
422
|
+ out_list)
|
|
422
|
+ out_list)
|
|
423
|
|
|
423
|
|
|
424
|
return out_list
|
|
424
|
return out_list
|
|
425
|
|
|
425
|
|
|
426
|
def _format_list(self, extracted_list):
|
|
426
|
def _format_list(self, extracted_list):
|
|
427
|
"""Format a list of traceback entry tuples for printing.
|
|
427
|
"""Format a list of traceback entry tuples for printing.
|
|
428
|
|
|
428
|
|
|
429
|
Given a list of tuples as returned by extract_tb() or
|
|
429
|
Given a list of tuples as returned by extract_tb() or
|
|
430
|
extract_stack(), return a list of strings ready for printing.
|
|
430
|
extract_stack(), return a list of strings ready for printing.
|
|
431
|
Each string in the resulting list corresponds to the item with the
|
|
431
|
Each string in the resulting list corresponds to the item with the
|
|
432
|
same index in the argument list. Each string ends in a newline;
|
|
432
|
same index in the argument list. Each string ends in a newline;
|
|
433
|
the strings may contain internal newlines as well, for those items
|
|
433
|
the strings may contain internal newlines as well, for those items
|
|
434
|
whose source text line is not None.
|
|
434
|
whose source text line is not None.
|
|
435
|
|
|
435
|
|
|
436
|
Lifted almost verbatim from traceback.py
|
|
436
|
Lifted almost verbatim from traceback.py
|
|
437
|
"""
|
|
437
|
"""
|
|
438
|
|
|
438
|
|
|
439
|
Colors = self.Colors
|
|
439
|
Colors = self.Colors
|
|
440
|
list = []
|
|
440
|
list = []
|
|
441
|
for filename, lineno, name, line in extracted_list[:-1]:
|
|
441
|
for filename, lineno, name, line in extracted_list[:-1]:
|
|
442
|
item = " %s, line %s%d%s, in %s%s%s\n" % (
|
|
442
|
item = " %s, line %s%d%s, in %s%s%s\n" % (
|
|
443
|
_format_filename(filename, Colors.filename, Colors.Normal),
|
|
443
|
_format_filename(filename, Colors.filename, Colors.Normal),
|
|
444
|
Colors.lineno,
|
|
444
|
Colors.lineno,
|
|
445
|
lineno,
|
|
445
|
lineno,
|
|
446
|
Colors.Normal,
|
|
446
|
Colors.Normal,
|
|
447
|
Colors.name,
|
|
447
|
Colors.name,
|
|
448
|
name,
|
|
448
|
name,
|
|
449
|
Colors.Normal,
|
|
449
|
Colors.Normal,
|
|
450
|
)
|
|
450
|
)
|
|
451
|
if line:
|
|
451
|
if line:
|
|
452
|
item += ' %s\n' % line.strip()
|
|
452
|
item += ' %s\n' % line.strip()
|
|
453
|
list.append(item)
|
|
453
|
list.append(item)
|
|
454
|
# Emphasize the last entry
|
|
454
|
# Emphasize the last entry
|
|
455
|
filename, lineno, name, line = extracted_list[-1]
|
|
455
|
filename, lineno, name, line = extracted_list[-1]
|
|
456
|
item = "%s %s, line %s%d%s, in %s%s%s%s\n" % (
|
|
456
|
item = "%s %s, line %s%d%s, in %s%s%s%s\n" % (
|
|
457
|
Colors.normalEm,
|
|
457
|
Colors.normalEm,
|
|
458
|
_format_filename(filename, Colors.filenameEm, Colors.normalEm),
|
|
458
|
_format_filename(filename, Colors.filenameEm, Colors.normalEm),
|
|
459
|
Colors.linenoEm,
|
|
459
|
Colors.linenoEm,
|
|
460
|
lineno,
|
|
460
|
lineno,
|
|
461
|
Colors.normalEm,
|
|
461
|
Colors.normalEm,
|
|
462
|
Colors.nameEm,
|
|
462
|
Colors.nameEm,
|
|
463
|
name,
|
|
463
|
name,
|
|
464
|
Colors.normalEm,
|
|
464
|
Colors.normalEm,
|
|
465
|
Colors.Normal,
|
|
465
|
Colors.Normal,
|
|
466
|
)
|
|
466
|
)
|
|
467
|
if line:
|
|
467
|
if line:
|
|
468
|
item += '%s %s%s\n' % (Colors.line, line.strip(),
|
|
468
|
item += '%s %s%s\n' % (Colors.line, line.strip(),
|
|
469
|
Colors.Normal)
|
|
469
|
Colors.Normal)
|
|
470
|
list.append(item)
|
|
470
|
list.append(item)
|
|
471
|
return list
|
|
471
|
return list
|
|
472
|
|
|
472
|
|
|
473
|
def _format_exception_only(self, etype, value):
|
|
473
|
def _format_exception_only(self, etype, value):
|
|
474
|
"""Format the exception part of a traceback.
|
|
474
|
"""Format the exception part of a traceback.
|
|
475
|
|
|
475
|
|
|
476
|
The arguments are the exception type and value such as given by
|
|
476
|
The arguments are the exception type and value such as given by
|
|
477
|
sys.exc_info()[:2]. The return value is a list of strings, each ending
|
|
477
|
sys.exc_info()[:2]. The return value is a list of strings, each ending
|
|
478
|
in a newline. Normally, the list contains a single string; however,
|
|
478
|
in a newline. Normally, the list contains a single string; however,
|
|
479
|
for SyntaxError exceptions, it contains several lines that (when
|
|
479
|
for SyntaxError exceptions, it contains several lines that (when
|
|
480
|
printed) display detailed information about where the syntax error
|
|
480
|
printed) display detailed information about where the syntax error
|
|
481
|
occurred. The message indicating which exception occurred is the
|
|
481
|
occurred. The message indicating which exception occurred is the
|
|
482
|
always last string in the list.
|
|
482
|
always last string in the list.
|
|
483
|
|
|
483
|
|
|
484
|
Also lifted nearly verbatim from traceback.py
|
|
484
|
Also lifted nearly verbatim from traceback.py
|
|
485
|
"""
|
|
485
|
"""
|
|
486
|
have_filedata = False
|
|
486
|
have_filedata = False
|
|
487
|
Colors = self.Colors
|
|
487
|
Colors = self.Colors
|
|
488
|
list = []
|
|
488
|
list = []
|
|
489
|
stype = py3compat.cast_unicode(Colors.excName + etype.__name__ + Colors.Normal)
|
|
489
|
stype = py3compat.cast_unicode(Colors.excName + etype.__name__ + Colors.Normal)
|
|
490
|
if value is None:
|
|
490
|
if value is None:
|
|
491
|
# Not sure if this can still happen in Python 2.6 and above
|
|
491
|
# Not sure if this can still happen in Python 2.6 and above
|
|
492
|
list.append(stype + '\n')
|
|
492
|
list.append(stype + '\n')
|
|
493
|
else:
|
|
493
|
else:
|
|
494
|
if issubclass(etype, SyntaxError):
|
|
494
|
if issubclass(etype, SyntaxError):
|
|
495
|
have_filedata = True
|
|
495
|
have_filedata = True
|
|
496
|
if not value.filename: value.filename = "<string>"
|
|
496
|
if not value.filename: value.filename = "<string>"
|
|
497
|
if value.lineno:
|
|
497
|
if value.lineno:
|
|
498
|
lineno = value.lineno
|
|
498
|
lineno = value.lineno
|
|
499
|
textline = linecache.getline(value.filename, value.lineno)
|
|
499
|
textline = linecache.getline(value.filename, value.lineno)
|
|
500
|
else:
|
|
500
|
else:
|
|
501
|
lineno = "unknown"
|
|
501
|
lineno = "unknown"
|
|
502
|
textline = ""
|
|
502
|
textline = ""
|
|
503
|
list.append(
|
|
503
|
list.append(
|
|
504
|
"%s %s, line %s%s%s\n"
|
|
504
|
"%s %s, line %s%s%s\n"
|
|
505
|
% (
|
|
505
|
% (
|
|
506
|
Colors.normalEm,
|
|
506
|
Colors.normalEm,
|
|
507
|
_format_filename(
|
|
507
|
_format_filename(
|
|
508
|
value.filename, Colors.filenameEm, Colors.normalEm
|
|
508
|
value.filename, Colors.filenameEm, Colors.normalEm
|
|
509
|
),
|
|
509
|
),
|
|
510
|
Colors.linenoEm,
|
|
510
|
Colors.linenoEm,
|
|
511
|
lineno,
|
|
511
|
lineno,
|
|
512
|
Colors.Normal,
|
|
512
|
Colors.Normal,
|
|
513
|
)
|
|
513
|
)
|
|
514
|
)
|
|
514
|
)
|
|
515
|
if textline == "":
|
|
515
|
if textline == "":
|
|
516
|
textline = py3compat.cast_unicode(value.text, "utf-8")
|
|
516
|
textline = py3compat.cast_unicode(value.text, "utf-8")
|
|
517
|
|
|
517
|
|
|
518
|
if textline is not None:
|
|
518
|
if textline is not None:
|
|
519
|
i = 0
|
|
519
|
i = 0
|
|
520
|
while i < len(textline) and textline[i].isspace():
|
|
520
|
while i < len(textline) and textline[i].isspace():
|
|
521
|
i += 1
|
|
521
|
i += 1
|
|
522
|
list.append('%s %s%s\n' % (Colors.line,
|
|
522
|
list.append('%s %s%s\n' % (Colors.line,
|
|
523
|
textline.strip(),
|
|
523
|
textline.strip(),
|
|
524
|
Colors.Normal))
|
|
524
|
Colors.Normal))
|
|
525
|
if value.offset is not None:
|
|
525
|
if value.offset is not None:
|
|
526
|
s = ' '
|
|
526
|
s = ' '
|
|
527
|
for c in textline[i:value.offset - 1]:
|
|
527
|
for c in textline[i:value.offset - 1]:
|
|
528
|
if c.isspace():
|
|
528
|
if c.isspace():
|
|
529
|
s += c
|
|
529
|
s += c
|
|
530
|
else:
|
|
530
|
else:
|
|
531
|
s += ' '
|
|
531
|
s += ' '
|
|
532
|
list.append('%s%s^%s\n' % (Colors.caret, s,
|
|
532
|
list.append('%s%s^%s\n' % (Colors.caret, s,
|
|
533
|
Colors.Normal))
|
|
533
|
Colors.Normal))
|
|
534
|
|
|
534
|
|
|
535
|
try:
|
|
535
|
try:
|
|
536
|
s = value.msg
|
|
536
|
s = value.msg
|
|
537
|
except Exception:
|
|
537
|
except Exception:
|
|
538
|
s = self._some_str(value)
|
|
538
|
s = self._some_str(value)
|
|
539
|
if s:
|
|
539
|
if s:
|
|
540
|
list.append('%s%s:%s %s\n' % (stype, Colors.excName,
|
|
540
|
list.append('%s%s:%s %s\n' % (stype, Colors.excName,
|
|
541
|
Colors.Normal, s))
|
|
541
|
Colors.Normal, s))
|
|
542
|
else:
|
|
542
|
else:
|
|
543
|
list.append('%s\n' % stype)
|
|
543
|
list.append('%s\n' % stype)
|
|
544
|
|
|
544
|
|
|
545
|
# sync with user hooks
|
|
545
|
# sync with user hooks
|
|
546
|
if have_filedata:
|
|
546
|
if have_filedata:
|
|
547
|
ipinst = get_ipython()
|
|
547
|
ipinst = get_ipython()
|
|
548
|
if ipinst is not None:
|
|
548
|
if ipinst is not None:
|
|
549
|
ipinst.hooks.synchronize_with_editor(value.filename, value.lineno, 0)
|
|
549
|
ipinst.hooks.synchronize_with_editor(value.filename, value.lineno, 0)
|
|
550
|
|
|
550
|
|
|
551
|
return list
|
|
551
|
return list
|
|
552
|
|
|
552
|
|
|
553
|
def get_exception_only(self, etype, value):
|
|
553
|
def get_exception_only(self, etype, value):
|
|
554
|
"""Only print the exception type and message, without a traceback.
|
|
554
|
"""Only print the exception type and message, without a traceback.
|
|
555
|
|
|
555
|
|
|
556
|
Parameters
|
|
556
|
Parameters
|
|
557
|
----------
|
|
557
|
----------
|
|
558
|
etype : exception type
|
|
558
|
etype : exception type
|
|
559
|
value : exception value
|
|
559
|
value : exception value
|
|
560
|
"""
|
|
560
|
"""
|
|
561
|
return ListTB.structured_traceback(self, etype, value)
|
|
561
|
return ListTB.structured_traceback(self, etype, value)
|
|
562
|
|
|
562
|
|
|
563
|
def show_exception_only(self, etype, evalue):
|
|
563
|
def show_exception_only(self, etype, evalue):
|
|
564
|
"""Only print the exception type and message, without a traceback.
|
|
564
|
"""Only print the exception type and message, without a traceback.
|
|
565
|
|
|
565
|
|
|
566
|
Parameters
|
|
566
|
Parameters
|
|
567
|
----------
|
|
567
|
----------
|
|
568
|
etype : exception type
|
|
568
|
etype : exception type
|
|
569
|
evalue : exception value
|
|
569
|
evalue : exception value
|
|
570
|
"""
|
|
570
|
"""
|
|
571
|
# This method needs to use __call__ from *this* class, not the one from
|
|
571
|
# This method needs to use __call__ from *this* class, not the one from
|
|
572
|
# a subclass whose signature or behavior may be different
|
|
572
|
# a subclass whose signature or behavior may be different
|
|
573
|
ostream = self.ostream
|
|
573
|
ostream = self.ostream
|
|
574
|
ostream.flush()
|
|
574
|
ostream.flush()
|
|
575
|
ostream.write('\n'.join(self.get_exception_only(etype, evalue)))
|
|
575
|
ostream.write('\n'.join(self.get_exception_only(etype, evalue)))
|
|
576
|
ostream.flush()
|
|
576
|
ostream.flush()
|
|
577
|
|
|
577
|
|
|
578
|
def _some_str(self, value):
|
|
578
|
def _some_str(self, value):
|
|
579
|
# Lifted from traceback.py
|
|
579
|
# Lifted from traceback.py
|
|
580
|
try:
|
|
580
|
try:
|
|
581
|
return py3compat.cast_unicode(str(value))
|
|
581
|
return py3compat.cast_unicode(str(value))
|
|
582
|
except:
|
|
582
|
except:
|
|
583
|
return u'<unprintable %s object>' % type(value).__name__
|
|
583
|
return u'<unprintable %s object>' % type(value).__name__
|
|
584
|
|
|
584
|
|
|
585
|
|
|
585
|
|
|
586
|
#----------------------------------------------------------------------------
|
|
586
|
#----------------------------------------------------------------------------
|
|
587
|
class VerboseTB(TBTools):
|
|
587
|
class VerboseTB(TBTools):
|
|
588
|
"""A port of Ka-Ping Yee's cgitb.py module that outputs color text instead
|
|
588
|
"""A port of Ka-Ping Yee's cgitb.py module that outputs color text instead
|
|
589
|
of HTML. Requires inspect and pydoc. Crazy, man.
|
|
589
|
of HTML. Requires inspect and pydoc. Crazy, man.
|
|
590
|
|
|
590
|
|
|
591
|
Modified version which optionally strips the topmost entries from the
|
|
591
|
Modified version which optionally strips the topmost entries from the
|
|
592
|
traceback, to be used with alternate interpreters (because their own code
|
|
592
|
traceback, to be used with alternate interpreters (because their own code
|
|
593
|
would appear in the traceback)."""
|
|
593
|
would appear in the traceback)."""
|
|
594
|
|
|
594
|
|
|
595
|
def __init__(self, color_scheme='Linux', call_pdb=False, ostream=None,
|
|
595
|
def __init__(self, color_scheme='Linux', call_pdb=False, ostream=None,
|
|
596
|
tb_offset=0, long_header=False, include_vars=True,
|
|
596
|
tb_offset=0, long_header=False, include_vars=True,
|
|
597
|
check_cache=None, debugger_cls = None,
|
|
597
|
check_cache=None, debugger_cls = None,
|
|
598
|
parent=None, config=None):
|
|
598
|
parent=None, config=None):
|
|
599
|
"""Specify traceback offset, headers and color scheme.
|
|
599
|
"""Specify traceback offset, headers and color scheme.
|
|
600
|
|
|
600
|
|
|
601
|
Define how many frames to drop from the tracebacks. Calling it with
|
|
601
|
Define how many frames to drop from the tracebacks. Calling it with
|
|
602
|
tb_offset=1 allows use of this handler in interpreters which will have
|
|
602
|
tb_offset=1 allows use of this handler in interpreters which will have
|
|
603
|
their own code at the top of the traceback (VerboseTB will first
|
|
603
|
their own code at the top of the traceback (VerboseTB will first
|
|
604
|
remove that frame before printing the traceback info)."""
|
|
604
|
remove that frame before printing the traceback info)."""
|
|
605
|
TBTools.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
|
|
605
|
TBTools.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
|
|
606
|
ostream=ostream, parent=parent, config=config)
|
|
606
|
ostream=ostream, parent=parent, config=config)
|
|
607
|
self.tb_offset = tb_offset
|
|
607
|
self.tb_offset = tb_offset
|
|
608
|
self.long_header = long_header
|
|
608
|
self.long_header = long_header
|
|
609
|
self.include_vars = include_vars
|
|
609
|
self.include_vars = include_vars
|
|
610
|
# By default we use linecache.checkcache, but the user can provide a
|
|
610
|
# By default we use linecache.checkcache, but the user can provide a
|
|
611
|
# different check_cache implementation. This is used by the IPython
|
|
611
|
# different check_cache implementation. This is used by the IPython
|
|
612
|
# kernel to provide tracebacks for interactive code that is cached,
|
|
612
|
# kernel to provide tracebacks for interactive code that is cached,
|
|
613
|
# by a compiler instance that flushes the linecache but preserves its
|
|
613
|
# by a compiler instance that flushes the linecache but preserves its
|
|
614
|
# own code cache.
|
|
614
|
# own code cache.
|
|
615
|
if check_cache is None:
|
|
615
|
if check_cache is None:
|
|
616
|
check_cache = linecache.checkcache
|
|
616
|
check_cache = linecache.checkcache
|
|
617
|
self.check_cache = check_cache
|
|
617
|
self.check_cache = check_cache
|
|
618
|
|
|
618
|
|
|
619
|
self.debugger_cls = debugger_cls or debugger.Pdb
|
|
619
|
self.debugger_cls = debugger_cls or debugger.Pdb
|
|
620
|
self.skip_hidden = True
|
|
620
|
self.skip_hidden = True
|
|
621
|
|
|
621
|
|
|
622
|
def format_record(self, frame_info):
|
|
622
|
def format_record(self, frame_info):
|
|
623
|
"""Format a single stack frame"""
|
|
623
|
"""Format a single stack frame"""
|
|
624
|
Colors = self.Colors # just a shorthand + quicker name lookup
|
|
624
|
Colors = self.Colors # just a shorthand + quicker name lookup
|
|
625
|
ColorsNormal = Colors.Normal # used a lot
|
|
625
|
ColorsNormal = Colors.Normal # used a lot
|
|
626
|
|
|
626
|
|
|
627
|
if isinstance(frame_info, stack_data.RepeatedFrames):
|
|
627
|
if isinstance(frame_info, stack_data.RepeatedFrames):
|
|
628
|
return ' %s[... skipping similar frames: %s]%s\n' % (
|
|
628
|
return ' %s[... skipping similar frames: %s]%s\n' % (
|
|
629
|
Colors.excName, frame_info.description, ColorsNormal)
|
|
629
|
Colors.excName, frame_info.description, ColorsNormal)
|
|
630
|
|
|
630
|
|
|
631
|
indent = ' ' * INDENT_SIZE
|
|
631
|
indent = ' ' * INDENT_SIZE
|
|
632
|
em_normal = '%s\n%s%s' % (Colors.valEm, indent, ColorsNormal)
|
|
632
|
em_normal = '%s\n%s%s' % (Colors.valEm, indent, ColorsNormal)
|
|
633
|
tpl_call = 'in %s%%s%s%%s%s' % (Colors.vName, Colors.valEm,
|
|
633
|
tpl_call = 'in %s%%s%s%%s%s' % (Colors.vName, Colors.valEm,
|
|
634
|
ColorsNormal)
|
|
634
|
ColorsNormal)
|
|
635
|
tpl_call_fail = 'in %s%%s%s(***failed resolving arguments***)%s' % \
|
|
635
|
tpl_call_fail = 'in %s%%s%s(***failed resolving arguments***)%s' % \
|
|
636
|
(Colors.vName, Colors.valEm, ColorsNormal)
|
|
636
|
(Colors.vName, Colors.valEm, ColorsNormal)
|
|
637
|
tpl_name_val = '%%s %s= %%s%s' % (Colors.valEm, ColorsNormal)
|
|
637
|
tpl_name_val = '%%s %s= %%s%s' % (Colors.valEm, ColorsNormal)
|
|
638
|
|
|
638
|
|
|
639
|
link = _format_filename(frame_info.filename, Colors.filenameEm, ColorsNormal)
|
|
639
|
link = _format_filename(frame_info.filename, Colors.filenameEm, ColorsNormal)
|
|
640
|
args, varargs, varkw, locals_ = inspect.getargvalues(frame_info.frame)
|
|
640
|
args, varargs, varkw, locals_ = inspect.getargvalues(frame_info.frame)
|
|
641
|
|
|
641
|
|
|
642
|
func = frame_info.executing.code_qualname()
|
|
642
|
func = frame_info.executing.code_qualname()
|
|
643
|
if func == '<module>':
|
|
643
|
if func == '<module>':
|
|
644
|
call = tpl_call % (func, '')
|
|
644
|
call = tpl_call % (func, '')
|
|
645
|
else:
|
|
645
|
else:
|
|
646
|
# Decide whether to include variable details or not
|
|
646
|
# Decide whether to include variable details or not
|
|
647
|
var_repr = eqrepr if self.include_vars else nullrepr
|
|
647
|
var_repr = eqrepr if self.include_vars else nullrepr
|
|
648
|
try:
|
|
648
|
try:
|
|
649
|
call = tpl_call % (func, inspect.formatargvalues(args,
|
|
649
|
call = tpl_call % (func, inspect.formatargvalues(args,
|
|
650
|
varargs, varkw,
|
|
650
|
varargs, varkw,
|
|
651
|
locals_, formatvalue=var_repr))
|
|
651
|
locals_, formatvalue=var_repr))
|
|
652
|
except KeyError:
|
|
652
|
except KeyError:
|
|
653
|
# This happens in situations like errors inside generator
|
|
653
|
# This happens in situations like errors inside generator
|
|
654
|
# expressions, where local variables are listed in the
|
|
654
|
# expressions, where local variables are listed in the
|
|
655
|
# line, but can't be extracted from the frame. I'm not
|
|
655
|
# line, but can't be extracted from the frame. I'm not
|
|
656
|
# 100% sure this isn't actually a bug in inspect itself,
|
|
656
|
# 100% sure this isn't actually a bug in inspect itself,
|
|
657
|
# but since there's no info for us to compute with, the
|
|
657
|
# but since there's no info for us to compute with, the
|
|
658
|
# best we can do is report the failure and move on. Here
|
|
658
|
# best we can do is report the failure and move on. Here
|
|
659
|
# we must *not* call any traceback construction again,
|
|
659
|
# we must *not* call any traceback construction again,
|
|
660
|
# because that would mess up use of %debug later on. So we
|
|
660
|
# because that would mess up use of %debug later on. So we
|
|
661
|
# simply report the failure and move on. The only
|
|
661
|
# simply report the failure and move on. The only
|
|
662
|
# limitation will be that this frame won't have locals
|
|
662
|
# limitation will be that this frame won't have locals
|
|
663
|
# listed in the call signature. Quite subtle problem...
|
|
663
|
# listed in the call signature. Quite subtle problem...
|
|
664
|
# I can't think of a good way to validate this in a unit
|
|
664
|
# I can't think of a good way to validate this in a unit
|
|
665
|
# test, but running a script consisting of:
|
|
665
|
# test, but running a script consisting of:
|
|
666
|
# dict( (k,v.strip()) for (k,v) in range(10) )
|
|
666
|
# dict( (k,v.strip()) for (k,v) in range(10) )
|
|
667
|
# will illustrate the error, if this exception catch is
|
|
667
|
# will illustrate the error, if this exception catch is
|
|
668
|
# disabled.
|
|
668
|
# disabled.
|
|
669
|
call = tpl_call_fail % func
|
|
669
|
call = tpl_call_fail % func
|
|
670
|
|
|
670
|
|
|
671
|
lvals = ''
|
|
671
|
lvals = ''
|
|
672
|
lvals_list = []
|
|
672
|
lvals_list = []
|
|
673
|
if self.include_vars:
|
|
673
|
if self.include_vars:
|
|
674
|
try:
|
|
674
|
try:
|
|
675
|
# we likely want to fix stackdata at some point, but
|
|
675
|
# we likely want to fix stackdata at some point, but
|
|
676
|
# still need a workaround.
|
|
676
|
# still need a workaround.
|
|
677
|
fibp = frame_info.variables_in_executing_piece
|
|
677
|
fibp = frame_info.variables_in_executing_piece
|
|
678
|
for var in fibp:
|
|
678
|
for var in fibp:
|
|
679
|
lvals_list.append(tpl_name_val % (var.name, repr(var.value)))
|
|
679
|
lvals_list.append(tpl_name_val % (var.name, repr(var.value)))
|
|
680
|
except Exception:
|
|
680
|
except Exception:
|
|
681
|
lvals_list.append(
|
|
681
|
lvals_list.append(
|
|
682
|
"Exception trying to inspect frame. No more locals available."
|
|
682
|
"Exception trying to inspect frame. No more locals available."
|
|
683
|
)
|
|
683
|
)
|
|
684
|
if lvals_list:
|
|
684
|
if lvals_list:
|
|
685
|
lvals = '%s%s' % (indent, em_normal.join(lvals_list))
|
|
685
|
lvals = '%s%s' % (indent, em_normal.join(lvals_list))
|
|
686
|
|
|
686
|
|
|
687
|
result = "%s, %s\n" % (link, call)
|
|
687
|
result = "%s, %s\n" % (link, call)
|
|
688
|
|
|
688
|
|
|
689
|
result += ''.join(_format_traceback_lines(frame_info.lines, Colors, self.has_colors, lvals))
|
|
689
|
result += ''.join(_format_traceback_lines(frame_info.lines, Colors, self.has_colors, lvals))
|
|
690
|
return result
|
|
690
|
return result
|
|
691
|
|
|
691
|
|
|
692
|
def prepare_header(self, etype, long_version=False):
|
|
692
|
def prepare_header(self, etype, long_version=False):
|
|
693
|
colors = self.Colors # just a shorthand + quicker name lookup
|
|
693
|
colors = self.Colors # just a shorthand + quicker name lookup
|
|
694
|
colorsnormal = colors.Normal # used a lot
|
|
694
|
colorsnormal = colors.Normal # used a lot
|
|
695
|
exc = '%s%s%s' % (colors.excName, etype, colorsnormal)
|
|
695
|
exc = '%s%s%s' % (colors.excName, etype, colorsnormal)
|
|
696
|
width = min(75, get_terminal_size()[0])
|
|
696
|
width = min(75, get_terminal_size()[0])
|
|
697
|
if long_version:
|
|
697
|
if long_version:
|
|
698
|
# Header with the exception type, python version, and date
|
|
698
|
# Header with the exception type, python version, and date
|
|
699
|
pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable
|
|
699
|
pyver = 'Python ' + sys.version.split()[0] + ': ' + sys.executable
|
|
700
|
date = time.ctime(time.time())
|
|
700
|
date = time.ctime(time.time())
|
|
701
|
|
|
701
|
|
|
702
|
head = '%s%s%s\n%s%s%s\n%s' % (colors.topline, '-' * width, colorsnormal,
|
|
702
|
head = '%s%s%s\n%s%s%s\n%s' % (colors.topline, '-' * width, colorsnormal,
|
|
703
|
exc, ' ' * (width - len(str(etype)) - len(pyver)),
|
|
703
|
exc, ' ' * (width - len(str(etype)) - len(pyver)),
|
|
704
|
pyver, date.rjust(width) )
|
|
704
|
pyver, date.rjust(width) )
|
|
705
|
head += "\nA problem occurred executing Python code. Here is the sequence of function" \
|
|
705
|
head += "\nA problem occurred executing Python code. Here is the sequence of function" \
|
|
706
|
"\ncalls leading up to the error, with the most recent (innermost) call last."
|
|
706
|
"\ncalls leading up to the error, with the most recent (innermost) call last."
|
|
707
|
else:
|
|
707
|
else:
|
|
708
|
# Simplified header
|
|
708
|
# Simplified header
|
|
709
|
head = '%s%s' % (exc, 'Traceback (most recent call last)'. \
|
|
709
|
head = '%s%s' % (exc, 'Traceback (most recent call last)'. \
|
|
710
|
rjust(width - len(str(etype))) )
|
|
710
|
rjust(width - len(str(etype))) )
|
|
711
|
|
|
711
|
|
|
712
|
return head
|
|
712
|
return head
|
|
713
|
|
|
713
|
|
|
714
|
def format_exception(self, etype, evalue):
|
|
714
|
def format_exception(self, etype, evalue):
|
|
715
|
colors = self.Colors # just a shorthand + quicker name lookup
|
|
715
|
colors = self.Colors # just a shorthand + quicker name lookup
|
|
716
|
colorsnormal = colors.Normal # used a lot
|
|
716
|
colorsnormal = colors.Normal # used a lot
|
|
717
|
# Get (safely) a string form of the exception info
|
|
717
|
# Get (safely) a string form of the exception info
|
|
718
|
try:
|
|
718
|
try:
|
|
719
|
etype_str, evalue_str = map(str, (etype, evalue))
|
|
719
|
etype_str, evalue_str = map(str, (etype, evalue))
|
|
720
|
except:
|
|
720
|
except:
|
|
721
|
# User exception is improperly defined.
|
|
721
|
# User exception is improperly defined.
|
|
722
|
etype, evalue = str, sys.exc_info()[:2]
|
|
722
|
etype, evalue = str, sys.exc_info()[:2]
|
|
723
|
etype_str, evalue_str = map(str, (etype, evalue))
|
|
723
|
etype_str, evalue_str = map(str, (etype, evalue))
|
|
724
|
# ... and format it
|
|
724
|
# ... and format it
|
|
725
|
return ['%s%s%s: %s' % (colors.excName, etype_str,
|
|
725
|
return ['%s%s%s: %s' % (colors.excName, etype_str,
|
|
726
|
colorsnormal, py3compat.cast_unicode(evalue_str))]
|
|
726
|
colorsnormal, py3compat.cast_unicode(evalue_str))]
|
|
727
|
|
|
727
|
|
|
728
|
def format_exception_as_a_whole(self, etype, evalue, etb, number_of_lines_of_context, tb_offset):
|
|
728
|
def format_exception_as_a_whole(self, etype, evalue, etb, number_of_lines_of_context, tb_offset):
|
|
729
|
"""Formats the header, traceback and exception message for a single exception.
|
|
729
|
"""Formats the header, traceback and exception message for a single exception.
|
|
730
|
|
|
730
|
|
|
731
|
This may be called multiple times by Python 3 exception chaining
|
|
731
|
This may be called multiple times by Python 3 exception chaining
|
|
732
|
(PEP 3134).
|
|
732
|
(PEP 3134).
|
|
733
|
"""
|
|
733
|
"""
|
|
734
|
# some locals
|
|
734
|
# some locals
|
|
735
|
orig_etype = etype
|
|
735
|
orig_etype = etype
|
|
736
|
try:
|
|
736
|
try:
|
|
737
|
etype = etype.__name__
|
|
737
|
etype = etype.__name__
|
|
738
|
except AttributeError:
|
|
738
|
except AttributeError:
|
|
739
|
pass
|
|
739
|
pass
|
|
740
|
|
|
740
|
|
|
741
|
tb_offset = self.tb_offset if tb_offset is None else tb_offset
|
|
741
|
tb_offset = self.tb_offset if tb_offset is None else tb_offset
|
|
742
|
head = self.prepare_header(etype, self.long_header)
|
|
742
|
head = self.prepare_header(etype, self.long_header)
|
|
743
|
records = self.get_records(etb, number_of_lines_of_context, tb_offset)
|
|
743
|
records = self.get_records(etb, number_of_lines_of_context, tb_offset)
|
|
744
|
|
|
744
|
|
|
745
|
frames = []
|
|
745
|
frames = []
|
|
746
|
skipped = 0
|
|
746
|
skipped = 0
|
|
747
|
lastrecord = len(records) - 1
|
|
747
|
lastrecord = len(records) - 1
|
|
748
|
for i, r in enumerate(records):
|
|
748
|
for i, r in enumerate(records):
|
|
749
|
if not isinstance(r, stack_data.RepeatedFrames) and self.skip_hidden:
|
|
749
|
if not isinstance(r, stack_data.RepeatedFrames) and self.skip_hidden:
|
|
750
|
if r.frame.f_locals.get("__tracebackhide__", 0) and i != lastrecord:
|
|
750
|
if r.frame.f_locals.get("__tracebackhide__", 0) and i != lastrecord:
|
|
751
|
skipped += 1
|
|
751
|
skipped += 1
|
|
752
|
continue
|
|
752
|
continue
|
|
753
|
if skipped:
|
|
753
|
if skipped:
|
|
754
|
Colors = self.Colors # just a shorthand + quicker name lookup
|
|
754
|
Colors = self.Colors # just a shorthand + quicker name lookup
|
|
755
|
ColorsNormal = Colors.Normal # used a lot
|
|
755
|
ColorsNormal = Colors.Normal # used a lot
|
|
756
|
frames.append(
|
|
756
|
frames.append(
|
|
757
|
" %s[... skipping hidden %s frame]%s\n"
|
|
757
|
" %s[... skipping hidden %s frame]%s\n"
|
|
758
|
% (Colors.excName, skipped, ColorsNormal)
|
|
758
|
% (Colors.excName, skipped, ColorsNormal)
|
|
759
|
)
|
|
759
|
)
|
|
760
|
skipped = 0
|
|
760
|
skipped = 0
|
|
761
|
frames.append(self.format_record(r))
|
|
761
|
frames.append(self.format_record(r))
|
|
762
|
if skipped:
|
|
762
|
if skipped:
|
|
763
|
Colors = self.Colors # just a shorthand + quicker name lookup
|
|
763
|
Colors = self.Colors # just a shorthand + quicker name lookup
|
|
764
|
ColorsNormal = Colors.Normal # used a lot
|
|
764
|
ColorsNormal = Colors.Normal # used a lot
|
|
765
|
frames.append(
|
|
765
|
frames.append(
|
|
766
|
" %s[... skipping hidden %s frame]%s\n"
|
|
766
|
" %s[... skipping hidden %s frame]%s\n"
|
|
767
|
% (Colors.excName, skipped, ColorsNormal)
|
|
767
|
% (Colors.excName, skipped, ColorsNormal)
|
|
768
|
)
|
|
768
|
)
|
|
769
|
|
|
769
|
|
|
770
|
formatted_exception = self.format_exception(etype, evalue)
|
|
770
|
formatted_exception = self.format_exception(etype, evalue)
|
|
771
|
if records:
|
|
771
|
if records:
|
|
772
|
frame_info = records[-1]
|
|
772
|
frame_info = records[-1]
|
|
773
|
ipinst = get_ipython()
|
|
773
|
ipinst = get_ipython()
|
|
774
|
if ipinst is not None:
|
|
774
|
if ipinst is not None:
|
|
775
|
ipinst.hooks.synchronize_with_editor(frame_info.filename, frame_info.lineno, 0)
|
|
775
|
ipinst.hooks.synchronize_with_editor(frame_info.filename, frame_info.lineno, 0)
|
|
776
|
|
|
776
|
|
|
777
|
return [[head] + frames + [''.join(formatted_exception[0])]]
|
|
777
|
return [[head] + frames + [''.join(formatted_exception[0])]]
|
|
778
|
|
|
778
|
|
|
779
|
def get_records(self, etb, number_of_lines_of_context, tb_offset):
|
|
779
|
def get_records(self, etb, number_of_lines_of_context, tb_offset):
|
|
780
|
context = number_of_lines_of_context - 1
|
|
780
|
context = number_of_lines_of_context - 1
|
|
781
|
after = context // 2
|
|
781
|
after = context // 2
|
|
782
|
before = context - after
|
|
782
|
before = context - after
|
|
783
|
if self.has_colors:
|
|
783
|
if self.has_colors:
|
|
784
|
style = get_style_by_name('default')
|
|
784
|
style = get_style_by_name('default')
|
|
785
|
style = stack_data.style_with_executing_node(style, 'bg:#00005f')
|
|
785
|
style = stack_data.style_with_executing_node(style, 'bg:#00005f')
|
|
786
|
formatter = Terminal256Formatter(style=style)
|
|
786
|
formatter = Terminal256Formatter(style=style)
|
|
787
|
else:
|
|
787
|
else:
|
|
788
|
formatter = None
|
|
788
|
formatter = None
|
|
789
|
options = stack_data.Options(
|
|
789
|
options = stack_data.Options(
|
|
790
|
before=before,
|
|
790
|
before=before,
|
|
791
|
after=after,
|
|
791
|
after=after,
|
|
792
|
pygments_formatter=formatter,
|
|
792
|
pygments_formatter=formatter,
|
|
793
|
)
|
|
793
|
)
|
|
794
|
return list(stack_data.FrameInfo.stack_data(etb, options=options))[tb_offset:]
|
|
794
|
return list(stack_data.FrameInfo.stack_data(etb, options=options))[tb_offset:]
|
|
795
|
|
|
795
|
|
|
796
|
def structured_traceback(self, etype, evalue, etb, tb_offset=None,
|
|
796
|
def structured_traceback(self, etype, evalue, etb, tb_offset=None,
|
|
797
|
number_of_lines_of_context=5):
|
|
797
|
number_of_lines_of_context=5):
|
|
798
|
"""Return a nice text document describing the traceback."""
|
|
798
|
"""Return a nice text document describing the traceback."""
|
|
799
|
|
|
799
|
|
|
800
|
formatted_exception = self.format_exception_as_a_whole(etype, evalue, etb, number_of_lines_of_context,
|
|
800
|
formatted_exception = self.format_exception_as_a_whole(etype, evalue, etb, number_of_lines_of_context,
|
|
801
|
tb_offset)
|
|
801
|
tb_offset)
|
|
802
|
|
|
802
|
|
|
803
|
colors = self.Colors # just a shorthand + quicker name lookup
|
|
803
|
colors = self.Colors # just a shorthand + quicker name lookup
|
|
804
|
colorsnormal = colors.Normal # used a lot
|
|
804
|
colorsnormal = colors.Normal # used a lot
|
|
805
|
head = '%s%s%s' % (colors.topline, '-' * min(75, get_terminal_size()[0]), colorsnormal)
|
|
805
|
head = '%s%s%s' % (colors.topline, '-' * min(75, get_terminal_size()[0]), colorsnormal)
|
|
806
|
structured_traceback_parts = [head]
|
|
806
|
structured_traceback_parts = [head]
|
|
807
|
chained_exceptions_tb_offset = 0
|
|
807
|
chained_exceptions_tb_offset = 0
|
|
808
|
lines_of_context = 3
|
|
808
|
lines_of_context = 3
|
|
809
|
formatted_exceptions = formatted_exception
|
|
809
|
formatted_exceptions = formatted_exception
|
|
810
|
exception = self.get_parts_of_chained_exception(evalue)
|
|
810
|
exception = self.get_parts_of_chained_exception(evalue)
|
|
811
|
if exception:
|
|
811
|
if exception:
|
|
812
|
formatted_exceptions += self.prepare_chained_exception_message(evalue.__cause__)
|
|
812
|
formatted_exceptions += self.prepare_chained_exception_message(evalue.__cause__)
|
|
813
|
etype, evalue, etb = exception
|
|
813
|
etype, evalue, etb = exception
|
|
814
|
else:
|
|
814
|
else:
|
|
815
|
evalue = None
|
|
815
|
evalue = None
|
|
816
|
chained_exc_ids = set()
|
|
816
|
chained_exc_ids = set()
|
|
817
|
while evalue:
|
|
817
|
while evalue:
|
|
818
|
formatted_exceptions += self.format_exception_as_a_whole(etype, evalue, etb, lines_of_context,
|
|
818
|
formatted_exceptions += self.format_exception_as_a_whole(etype, evalue, etb, lines_of_context,
|
|
819
|
chained_exceptions_tb_offset)
|
|
819
|
chained_exceptions_tb_offset)
|
|
820
|
exception = self.get_parts_of_chained_exception(evalue)
|
|
820
|
exception = self.get_parts_of_chained_exception(evalue)
|
|
821
|
|
|
821
|
|
|
822
|
if exception and not id(exception[1]) in chained_exc_ids:
|
|
822
|
if exception and not id(exception[1]) in chained_exc_ids:
|
|
823
|
chained_exc_ids.add(id(exception[1])) # trace exception to avoid infinite 'cause' loop
|
|
823
|
chained_exc_ids.add(id(exception[1])) # trace exception to avoid infinite 'cause' loop
|
|
824
|
formatted_exceptions += self.prepare_chained_exception_message(evalue.__cause__)
|
|
824
|
formatted_exceptions += self.prepare_chained_exception_message(evalue.__cause__)
|
|
825
|
etype, evalue, etb = exception
|
|
825
|
etype, evalue, etb = exception
|
|
826
|
else:
|
|
826
|
else:
|
|
827
|
evalue = None
|
|
827
|
evalue = None
|
|
828
|
|
|
828
|
|
|
829
|
# we want to see exceptions in a reversed order:
|
|
829
|
# we want to see exceptions in a reversed order:
|
|
830
|
# the first exception should be on top
|
|
830
|
# the first exception should be on top
|
|
831
|
for formatted_exception in reversed(formatted_exceptions):
|
|
831
|
for formatted_exception in reversed(formatted_exceptions):
|
|
832
|
structured_traceback_parts += formatted_exception
|
|
832
|
structured_traceback_parts += formatted_exception
|
|
833
|
|
|
833
|
|
|
834
|
return structured_traceback_parts
|
|
834
|
return structured_traceback_parts
|
|
835
|
|
|
835
|
|
|
836
|
def debugger(self, force=False):
|
|
836
|
def debugger(self, force=False):
|
|
837
|
"""Call up the pdb debugger if desired, always clean up the tb
|
|
837
|
"""Call up the pdb debugger if desired, always clean up the tb
|
|
838
|
reference.
|
|
838
|
reference.
|
|
839
|
|
|
839
|
|
|
840
|
Keywords:
|
|
840
|
Keywords:
|
|
841
|
|
|
841
|
|
|
842
|
- force(False): by default, this routine checks the instance call_pdb
|
|
842
|
- force(False): by default, this routine checks the instance call_pdb
|
|
843
|
flag and does not actually invoke the debugger if the flag is false.
|
|
843
|
flag and does not actually invoke the debugger if the flag is false.
|
|
844
|
The 'force' option forces the debugger to activate even if the flag
|
|
844
|
The 'force' option forces the debugger to activate even if the flag
|
|
845
|
is false.
|
|
845
|
is false.
|
|
846
|
|
|
846
|
|
|
847
|
If the call_pdb flag is set, the pdb interactive debugger is
|
|
847
|
If the call_pdb flag is set, the pdb interactive debugger is
|
|
848
|
invoked. In all cases, the self.tb reference to the current traceback
|
|
848
|
invoked. In all cases, the self.tb reference to the current traceback
|
|
849
|
is deleted to prevent lingering references which hamper memory
|
|
849
|
is deleted to prevent lingering references which hamper memory
|
|
850
|
management.
|
|
850
|
management.
|
|
851
|
|
|
851
|
|
|
852
|
Note that each call to pdb() does an 'import readline', so if your app
|
|
852
|
Note that each call to pdb() does an 'import readline', so if your app
|
|
853
|
requires a special setup for the readline completers, you'll have to
|
|
853
|
requires a special setup for the readline completers, you'll have to
|
|
854
|
fix that by hand after invoking the exception handler."""
|
|
854
|
fix that by hand after invoking the exception handler."""
|
|
855
|
|
|
855
|
|
|
856
|
if force or self.call_pdb:
|
|
856
|
if force or self.call_pdb:
|
|
857
|
if self.pdb is None:
|
|
857
|
if self.pdb is None:
|
|
858
|
self.pdb = self.debugger_cls()
|
|
858
|
self.pdb = self.debugger_cls()
|
|
859
|
# the system displayhook may have changed, restore the original
|
|
859
|
# the system displayhook may have changed, restore the original
|
|
860
|
# for pdb
|
|
860
|
# for pdb
|
|
861
|
display_trap = DisplayTrap(hook=sys.__displayhook__)
|
|
861
|
display_trap = DisplayTrap(hook=sys.__displayhook__)
|
|
862
|
with display_trap:
|
|
862
|
with display_trap:
|
|
863
|
self.pdb.reset()
|
|
863
|
self.pdb.reset()
|
|
864
|
# Find the right frame so we don't pop up inside ipython itself
|
|
864
|
# Find the right frame so we don't pop up inside ipython itself
|
|
865
|
if hasattr(self, 'tb') and self.tb is not None:
|
|
865
|
if hasattr(self, 'tb') and self.tb is not None:
|
|
866
|
etb = self.tb
|
|
866
|
etb = self.tb
|
|
867
|
else:
|
|
867
|
else:
|
|
868
|
etb = self.tb = sys.last_traceback
|
|
868
|
etb = self.tb = sys.last_traceback
|
|
869
|
while self.tb is not None and self.tb.tb_next is not None:
|
|
869
|
while self.tb is not None and self.tb.tb_next is not None:
|
|
870
|
self.tb = self.tb.tb_next
|
|
870
|
self.tb = self.tb.tb_next
|
|
871
|
if etb and etb.tb_next:
|
|
871
|
if etb and etb.tb_next:
|
|
872
|
etb = etb.tb_next
|
|
872
|
etb = etb.tb_next
|
|
873
|
self.pdb.botframe = etb.tb_frame
|
|
873
|
self.pdb.botframe = etb.tb_frame
|
|
874
|
self.pdb.interaction(None, etb)
|
|
874
|
self.pdb.interaction(None, etb)
|
|
875
|
|
|
875
|
|
|
876
|
if hasattr(self, 'tb'):
|
|
876
|
if hasattr(self, 'tb'):
|
|
877
|
del self.tb
|
|
877
|
del self.tb
|
|
878
|
|
|
878
|
|
|
879
|
def handler(self, info=None):
|
|
879
|
def handler(self, info=None):
|
|
880
|
(etype, evalue, etb) = info or sys.exc_info()
|
|
880
|
(etype, evalue, etb) = info or sys.exc_info()
|
|
881
|
self.tb = etb
|
|
881
|
self.tb = etb
|
|
882
|
ostream = self.ostream
|
|
882
|
ostream = self.ostream
|
|
883
|
ostream.flush()
|
|
883
|
ostream.flush()
|
|
884
|
ostream.write(self.text(etype, evalue, etb))
|
|
884
|
ostream.write(self.text(etype, evalue, etb))
|
|
885
|
ostream.write('\n')
|
|
885
|
ostream.write('\n')
|
|
886
|
ostream.flush()
|
|
886
|
ostream.flush()
|
|
887
|
|
|
887
|
|
|
888
|
# Changed so an instance can just be called as VerboseTB_inst() and print
|
|
888
|
# Changed so an instance can just be called as VerboseTB_inst() and print
|
|
889
|
# out the right info on its own.
|
|
889
|
# out the right info on its own.
|
|
890
|
def __call__(self, etype=None, evalue=None, etb=None):
|
|
890
|
def __call__(self, etype=None, evalue=None, etb=None):
|
|
891
|
"""This hook can replace sys.excepthook (for Python 2.1 or higher)."""
|
|
891
|
"""This hook can replace sys.excepthook (for Python 2.1 or higher)."""
|
|
892
|
if etb is None:
|
|
892
|
if etb is None:
|
|
893
|
self.handler()
|
|
893
|
self.handler()
|
|
894
|
else:
|
|
894
|
else:
|
|
895
|
self.handler((etype, evalue, etb))
|
|
895
|
self.handler((etype, evalue, etb))
|
|
896
|
try:
|
|
896
|
try:
|
|
897
|
self.debugger()
|
|
897
|
self.debugger()
|
|
898
|
except KeyboardInterrupt:
|
|
898
|
except KeyboardInterrupt:
|
|
899
|
print("\nKeyboardInterrupt")
|
|
899
|
print("\nKeyboardInterrupt")
|
|
900
|
|
|
900
|
|
|
901
|
|
|
901
|
|
|
902
|
#----------------------------------------------------------------------------
|
|
902
|
#----------------------------------------------------------------------------
|
|
903
|
class FormattedTB(VerboseTB, ListTB):
|
|
903
|
class FormattedTB(VerboseTB, ListTB):
|
|
904
|
"""Subclass ListTB but allow calling with a traceback.
|
|
904
|
"""Subclass ListTB but allow calling with a traceback.
|
|
905
|
|
|
905
|
|
|
906
|
It can thus be used as a sys.excepthook for Python > 2.1.
|
|
906
|
It can thus be used as a sys.excepthook for Python > 2.1.
|
|
907
|
|
|
907
|
|
|
908
|
Also adds 'Context' and 'Verbose' modes, not available in ListTB.
|
|
908
|
Also adds 'Context' and 'Verbose' modes, not available in ListTB.
|
|
909
|
|
|
909
|
|
|
910
|
Allows a tb_offset to be specified. This is useful for situations where
|
|
910
|
Allows a tb_offset to be specified. This is useful for situations where
|
|
911
|
one needs to remove a number of topmost frames from the traceback (such as
|
|
911
|
one needs to remove a number of topmost frames from the traceback (such as
|
|
912
|
occurs with python programs that themselves execute other python code,
|
|
912
|
occurs with python programs that themselves execute other python code,
|
|
913
|
like Python shells). """
|
|
913
|
like Python shells). """
|
|
914
|
|
|
914
|
|
|
915
|
def __init__(self, mode='Plain', color_scheme='Linux', call_pdb=False,
|
|
915
|
def __init__(self, mode='Plain', color_scheme='Linux', call_pdb=False,
|
|
916
|
ostream=None,
|
|
916
|
ostream=None,
|
|
917
|
tb_offset=0, long_header=False, include_vars=False,
|
|
917
|
tb_offset=0, long_header=False, include_vars=False,
|
|
918
|
check_cache=None, debugger_cls=None,
|
|
918
|
check_cache=None, debugger_cls=None,
|
|
919
|
parent=None, config=None):
|
|
919
|
parent=None, config=None):
|
|
920
|
|
|
920
|
|
|
921
|
# NEVER change the order of this list. Put new modes at the end:
|
|
921
|
# NEVER change the order of this list. Put new modes at the end:
|
|
922
|
self.valid_modes = ['Plain', 'Context', 'Verbose', 'Minimal']
|
|
922
|
self.valid_modes = ['Plain', 'Context', 'Verbose', 'Minimal']
|
|
923
|
self.verbose_modes = self.valid_modes[1:3]
|
|
923
|
self.verbose_modes = self.valid_modes[1:3]
|
|
924
|
|
|
924
|
|
|
925
|
VerboseTB.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
|
|
925
|
VerboseTB.__init__(self, color_scheme=color_scheme, call_pdb=call_pdb,
|
|
926
|
ostream=ostream, tb_offset=tb_offset,
|
|
926
|
ostream=ostream, tb_offset=tb_offset,
|
|
927
|
long_header=long_header, include_vars=include_vars,
|
|
927
|
long_header=long_header, include_vars=include_vars,
|
|
928
|
check_cache=check_cache, debugger_cls=debugger_cls,
|
|
928
|
check_cache=check_cache, debugger_cls=debugger_cls,
|
|
929
|
parent=parent, config=config)
|
|
929
|
parent=parent, config=config)
|
|
930
|
|
|
930
|
|
|
931
|
# Different types of tracebacks are joined with different separators to
|
|
931
|
# Different types of tracebacks are joined with different separators to
|
|
932
|
# form a single string. They are taken from this dict
|
|
932
|
# form a single string. They are taken from this dict
|
|
933
|
self._join_chars = dict(Plain='', Context='\n', Verbose='\n',
|
|
933
|
self._join_chars = dict(Plain='', Context='\n', Verbose='\n',
|
|
934
|
Minimal='')
|
|
934
|
Minimal='')
|
|
935
|
# set_mode also sets the tb_join_char attribute
|
|
935
|
# set_mode also sets the tb_join_char attribute
|
|
936
|
self.set_mode(mode)
|
|
936
|
self.set_mode(mode)
|
|
937
|
|
|
937
|
|
|
938
|
def structured_traceback(self, etype, value, tb, tb_offset=None, number_of_lines_of_context=5):
|
|
938
|
def structured_traceback(self, etype, value, tb, tb_offset=None, number_of_lines_of_context=5):
|
|
939
|
tb_offset = self.tb_offset if tb_offset is None else tb_offset
|
|
939
|
tb_offset = self.tb_offset if tb_offset is None else tb_offset
|
|
940
|
mode = self.mode
|
|
940
|
mode = self.mode
|
|
941
|
if mode in self.verbose_modes:
|
|
941
|
if mode in self.verbose_modes:
|
|
942
|
# Verbose modes need a full traceback
|
|
942
|
# Verbose modes need a full traceback
|
|
943
|
return VerboseTB.structured_traceback(
|
|
943
|
return VerboseTB.structured_traceback(
|
|
944
|
self, etype, value, tb, tb_offset, number_of_lines_of_context
|
|
944
|
self, etype, value, tb, tb_offset, number_of_lines_of_context
|
|
945
|
)
|
|
945
|
)
|
|
946
|
elif mode == 'Minimal':
|
|
946
|
elif mode == 'Minimal':
|
|
947
|
return ListTB.get_exception_only(self, etype, value)
|
|
947
|
return ListTB.get_exception_only(self, etype, value)
|
|
948
|
else:
|
|
948
|
else:
|
|
949
|
# We must check the source cache because otherwise we can print
|
|
949
|
# We must check the source cache because otherwise we can print
|
|
950
|
# out-of-date source code.
|
|
950
|
# out-of-date source code.
|
|
951
|
self.check_cache()
|
|
951
|
self.check_cache()
|
|
952
|
# Now we can extract and format the exception
|
|
952
|
# Now we can extract and format the exception
|
|
953
|
return ListTB.structured_traceback(
|
|
953
|
return ListTB.structured_traceback(
|
|
954
|
self, etype, value, tb, tb_offset, number_of_lines_of_context
|
|
954
|
self, etype, value, tb, tb_offset, number_of_lines_of_context
|
|
955
|
)
|
|
955
|
)
|
|
956
|
|
|
956
|
|
|
957
|
def stb2text(self, stb):
|
|
957
|
def stb2text(self, stb):
|
|
958
|
"""Convert a structured traceback (a list) to a string."""
|
|
958
|
"""Convert a structured traceback (a list) to a string."""
|
|
959
|
return self.tb_join_char.join(stb)
|
|
959
|
return self.tb_join_char.join(stb)
|
|
960
|
|
|
960
|
|
|
961
|
|
|
961
|
|
|
962
|
def set_mode(self, mode=None):
|
|
962
|
def set_mode(self, mode=None):
|
|
963
|
"""Switch to the desired mode.
|
|
963
|
"""Switch to the desired mode.
|
|
964
|
|
|
964
|
|
|
965
|
If mode is not specified, cycles through the available modes."""
|
|
965
|
If mode is not specified, cycles through the available modes."""
|
|
966
|
|
|
966
|
|
|
967
|
if not mode:
|
|
967
|
if not mode:
|
|
968
|
new_idx = (self.valid_modes.index(self.mode) + 1 ) % \
|
|
968
|
new_idx = (self.valid_modes.index(self.mode) + 1 ) % \
|
|
969
|
len(self.valid_modes)
|
|
969
|
len(self.valid_modes)
|
|
970
|
self.mode = self.valid_modes[new_idx]
|
|
970
|
self.mode = self.valid_modes[new_idx]
|
|
971
|
elif mode not in self.valid_modes:
|
|
971
|
elif mode not in self.valid_modes:
|
|
972
|
raise ValueError('Unrecognized mode in FormattedTB: <' + mode + '>\n'
|
|
972
|
raise ValueError('Unrecognized mode in FormattedTB: <' + mode + '>\n'
|
|
973
|
'Valid modes: ' + str(self.valid_modes))
|
|
973
|
'Valid modes: ' + str(self.valid_modes))
|
|
974
|
else:
|
|
974
|
else:
|
|
975
|
self.mode = mode
|
|
975
|
self.mode = mode
|
|
976
|
# include variable details only in 'Verbose' mode
|
|
976
|
# include variable details only in 'Verbose' mode
|
|
977
|
self.include_vars = (self.mode == self.valid_modes[2])
|
|
977
|
self.include_vars = (self.mode == self.valid_modes[2])
|
|
978
|
# Set the join character for generating text tracebacks
|
|
978
|
# Set the join character for generating text tracebacks
|
|
979
|
self.tb_join_char = self._join_chars[self.mode]
|
|
979
|
self.tb_join_char = self._join_chars[self.mode]
|
|
980
|
|
|
980
|
|
|
981
|
# some convenient shortcuts
|
|
981
|
# some convenient shortcuts
|
|
982
|
def plain(self):
|
|
982
|
def plain(self):
|
|
983
|
self.set_mode(self.valid_modes[0])
|
|
983
|
self.set_mode(self.valid_modes[0])
|
|
984
|
|
|
984
|
|
|
985
|
def context(self):
|
|
985
|
def context(self):
|
|
986
|
self.set_mode(self.valid_modes[1])
|
|
986
|
self.set_mode(self.valid_modes[1])
|
|
987
|
|
|
987
|
|
|
988
|
def verbose(self):
|
|
988
|
def verbose(self):
|
|
989
|
self.set_mode(self.valid_modes[2])
|
|
989
|
self.set_mode(self.valid_modes[2])
|
|
990
|
|
|
990
|
|
|
991
|
def minimal(self):
|
|
991
|
def minimal(self):
|
|
992
|
self.set_mode(self.valid_modes[3])
|
|
992
|
self.set_mode(self.valid_modes[3])
|
|
993
|
|
|
993
|
|
|
994
|
|
|
994
|
|
|
995
|
#----------------------------------------------------------------------------
|
|
995
|
#----------------------------------------------------------------------------
|
|
996
|
class AutoFormattedTB(FormattedTB):
|
|
996
|
class AutoFormattedTB(FormattedTB):
|
|
997
|
"""A traceback printer which can be called on the fly.
|
|
997
|
"""A traceback printer which can be called on the fly.
|
|
998
|
|
|
998
|
|
|
999
|
It will find out about exceptions by itself.
|
|
999
|
It will find out about exceptions by itself.
|
|
1000
|
|
|
1000
|
|
|
1001
|
A brief example::
|
|
1001
|
A brief example::
|
|
1002
|
|
|
1002
|
|
|
1003
|
AutoTB = AutoFormattedTB(mode = 'Verbose',color_scheme='Linux')
|
|
1003
|
AutoTB = AutoFormattedTB(mode = 'Verbose',color_scheme='Linux')
|
|
1004
|
try:
|
|
1004
|
try:
|
|
1005
|
...
|
|
1005
|
...
|
|
1006
|
except:
|
|
1006
|
except:
|
|
1007
|
AutoTB() # or AutoTB(out=logfile) where logfile is an open file object
|
|
1007
|
AutoTB() # or AutoTB(out=logfile) where logfile is an open file object
|
|
1008
|
"""
|
|
1008
|
"""
|
|
1009
|
|
|
1009
|
|
|
1010
|
def __call__(self, etype=None, evalue=None, etb=None,
|
|
1010
|
def __call__(self, etype=None, evalue=None, etb=None,
|
|
1011
|
out=None, tb_offset=None):
|
|
1011
|
out=None, tb_offset=None):
|
|
1012
|
"""Print out a formatted exception traceback.
|
|
1012
|
"""Print out a formatted exception traceback.
|
|
1013
|
|
|
1013
|
|
|
1014
|
Optional arguments:
|
|
1014
|
Optional arguments:
|
|
1015
|
- out: an open file-like object to direct output to.
|
|
1015
|
- out: an open file-like object to direct output to.
|
|
1016
|
|
|
1016
|
|
|
1017
|
- tb_offset: the number of frames to skip over in the stack, on a
|
|
1017
|
- tb_offset: the number of frames to skip over in the stack, on a
|
|
1018
|
per-call basis (this overrides temporarily the instance's tb_offset
|
|
1018
|
per-call basis (this overrides temporarily the instance's tb_offset
|
|
1019
|
given at initialization time."""
|
|
1019
|
given at initialization time."""
|
|
1020
|
|
|
1020
|
|
|
1021
|
if out is None:
|
|
1021
|
if out is None:
|
|
1022
|
out = self.ostream
|
|
1022
|
out = self.ostream
|
|
1023
|
out.flush()
|
|
1023
|
out.flush()
|
|
1024
|
out.write(self.text(etype, evalue, etb, tb_offset))
|
|
1024
|
out.write(self.text(etype, evalue, etb, tb_offset))
|
|
1025
|
out.write('\n')
|
|
1025
|
out.write('\n')
|
|
1026
|
out.flush()
|
|
1026
|
out.flush()
|
|
1027
|
# FIXME: we should remove the auto pdb behavior from here and leave
|
|
1027
|
# FIXME: we should remove the auto pdb behavior from here and leave
|
|
1028
|
# that to the clients.
|
|
1028
|
# that to the clients.
|
|
1029
|
try:
|
|
1029
|
try:
|
|
1030
|
self.debugger()
|
|
1030
|
self.debugger()
|
|
1031
|
except KeyboardInterrupt:
|
|
1031
|
except KeyboardInterrupt:
|
|
1032
|
print("\nKeyboardInterrupt")
|
|
1032
|
print("\nKeyboardInterrupt")
|
|
1033
|
|
|
1033
|
|
|
1034
|
def structured_traceback(self, etype=None, value=None, tb=None,
|
|
1034
|
def structured_traceback(self, etype=None, value=None, tb=None,
|
|
1035
|
tb_offset=None, number_of_lines_of_context=5):
|
|
1035
|
tb_offset=None, number_of_lines_of_context=5):
|
|
1036
|
if etype is None:
|
|
1036
|
if etype is None:
|
|
1037
|
etype, value, tb = sys.exc_info()
|
|
1037
|
etype, value, tb = sys.exc_info()
|
|
1038
|
if isinstance(tb, tuple):
|
|
1038
|
if isinstance(tb, tuple):
|
|
1039
|
# tb is a tuple if this is a chained exception.
|
|
1039
|
# tb is a tuple if this is a chained exception.
|
|
1040
|
self.tb = tb[0]
|
|
1040
|
self.tb = tb[0]
|
|
1041
|
else:
|
|
1041
|
else:
|
|
1042
|
self.tb = tb
|
|
1042
|
self.tb = tb
|
|
1043
|
return FormattedTB.structured_traceback(
|
|
1043
|
return FormattedTB.structured_traceback(
|
|
1044
|
self, etype, value, tb, tb_offset, number_of_lines_of_context)
|
|
1044
|
self, etype, value, tb, tb_offset, number_of_lines_of_context)
|
|
1045
|
|
|
1045
|
|
|
1046
|
|
|
1046
|
|
|
1047
|
#---------------------------------------------------------------------------
|
|
1047
|
#---------------------------------------------------------------------------
|
|
1048
|
|
|
1048
|
|
|
1049
|
# A simple class to preserve Nathan's original functionality.
|
|
1049
|
# A simple class to preserve Nathan's original functionality.
|
|
1050
|
class ColorTB(FormattedTB):
|
|
1050
|
class ColorTB(FormattedTB):
|
|
1051
|
"""Shorthand to initialize a FormattedTB in Linux colors mode."""
|
|
1051
|
"""Shorthand to initialize a FormattedTB in Linux colors mode."""
|
|
1052
|
|
|
1052
|
|
|
1053
|
def __init__(self, color_scheme='Linux', call_pdb=0, **kwargs):
|
|
1053
|
def __init__(self, color_scheme='Linux', call_pdb=0, **kwargs):
|
|
1054
|
FormattedTB.__init__(self, color_scheme=color_scheme,
|
|
1054
|
FormattedTB.__init__(self, color_scheme=color_scheme,
|
|
1055
|
call_pdb=call_pdb, **kwargs)
|
|
1055
|
call_pdb=call_pdb, **kwargs)
|
|
1056
|
|
|
1056
|
|
|
1057
|
|
|
1057
|
|
|
1058
|
class SyntaxTB(ListTB):
|
|
1058
|
class SyntaxTB(ListTB):
|
|
1059
|
"""Extension which holds some state: the last exception value"""
|
|
1059
|
"""Extension which holds some state: the last exception value"""
|
|
1060
|
|
|
1060
|
|
|
1061
|
def __init__(self, color_scheme='NoColor', parent=None, config=None):
|
|
1061
|
def __init__(self, color_scheme='NoColor', parent=None, config=None):
|
|
1062
|
ListTB.__init__(self, color_scheme, parent=parent, config=config)
|
|
1062
|
ListTB.__init__(self, color_scheme, parent=parent, config=config)
|
|
1063
|
self.last_syntax_error = None
|
|
1063
|
self.last_syntax_error = None
|
|
1064
|
|
|
1064
|
|
|
1065
|
def __call__(self, etype, value, elist):
|
|
1065
|
def __call__(self, etype, value, elist):
|
|
1066
|
self.last_syntax_error = value
|
|
1066
|
self.last_syntax_error = value
|
|
1067
|
|
|
1067
|
|
|
1068
|
ListTB.__call__(self, etype, value, elist)
|
|
1068
|
ListTB.__call__(self, etype, value, elist)
|
|
1069
|
|
|
1069
|
|
|
1070
|
def structured_traceback(self, etype, value, elist, tb_offset=None,
|
|
1070
|
def structured_traceback(self, etype, value, elist, tb_offset=None,
|
|
1071
|
context=5):
|
|
1071
|
context=5):
|
|
1072
|
# If the source file has been edited, the line in the syntax error can
|
|
1072
|
# If the source file has been edited, the line in the syntax error can
|
|
1073
|
# be wrong (retrieved from an outdated cache). This replaces it with
|
|
1073
|
# be wrong (retrieved from an outdated cache). This replaces it with
|
|
1074
|
# the current value.
|
|
1074
|
# the current value.
|
|
1075
|
if isinstance(value, SyntaxError) \
|
|
1075
|
if isinstance(value, SyntaxError) \
|
|
1076
|
and isinstance(value.filename, str) \
|
|
1076
|
and isinstance(value.filename, str) \
|
|
1077
|
and isinstance(value.lineno, int):
|
|
1077
|
and isinstance(value.lineno, int):
|
|
1078
|
linecache.checkcache(value.filename)
|
|
1078
|
linecache.checkcache(value.filename)
|
|
1079
|
newtext = linecache.getline(value.filename, value.lineno)
|
|
1079
|
newtext = linecache.getline(value.filename, value.lineno)
|
|
1080
|
if newtext:
|
|
1080
|
if newtext:
|
|
1081
|
value.text = newtext
|
|
1081
|
value.text = newtext
|
|
1082
|
self.last_syntax_error = value
|
|
1082
|
self.last_syntax_error = value
|
|
1083
|
return super(SyntaxTB, self).structured_traceback(etype, value, elist,
|
|
1083
|
return super(SyntaxTB, self).structured_traceback(etype, value, elist,
|
|
1084
|
tb_offset=tb_offset, context=context)
|
|
1084
|
tb_offset=tb_offset, context=context)
|
|
1085
|
|
|
1085
|
|
|
1086
|
def clear_err_state(self):
|
|
1086
|
def clear_err_state(self):
|
|
1087
|
"""Return the current error state and clear it"""
|
|
1087
|
"""Return the current error state and clear it"""
|
|
1088
|
e = self.last_syntax_error
|
|
1088
|
e = self.last_syntax_error
|
|
1089
|
self.last_syntax_error = None
|
|
1089
|
self.last_syntax_error = None
|
|
1090
|
return e
|
|
1090
|
return e
|
|
1091
|
|
|
1091
|
|
|
1092
|
def stb2text(self, stb):
|
|
1092
|
def stb2text(self, stb):
|
|
1093
|
"""Convert a structured traceback (a list) to a string."""
|
|
1093
|
"""Convert a structured traceback (a list) to a string."""
|
|
1094
|
return ''.join(stb)
|
|
1094
|
return ''.join(stb)
|
|
1095
|
|
|
1095
|
|
|
1096
|
|
|
1096
|
|
|
1097
|
# some internal-use functions
|
|
1097
|
# some internal-use functions
|
|
1098
|
def text_repr(value):
|
|
1098
|
def text_repr(value):
|
|
1099
|
"""Hopefully pretty robust repr equivalent."""
|
|
1099
|
"""Hopefully pretty robust repr equivalent."""
|
|
1100
|
# this is pretty horrible but should always return *something*
|
|
1100
|
# this is pretty horrible but should always return *something*
|
|
1101
|
try:
|
|
1101
|
try:
|
|
1102
|
return pydoc.text.repr(value)
|
|
1102
|
return pydoc.text.repr(value)
|
|
1103
|
except KeyboardInterrupt:
|
|
1103
|
except KeyboardInterrupt:
|
|
1104
|
raise
|
|
1104
|
raise
|
|
1105
|
except:
|
|
1105
|
except:
|
|
1106
|
try:
|
|
1106
|
try:
|
|
1107
|
return repr(value)
|
|
1107
|
return repr(value)
|
|
1108
|
except KeyboardInterrupt:
|
|
1108
|
except KeyboardInterrupt:
|
|
1109
|
raise
|
|
1109
|
raise
|
|
1110
|
except:
|
|
1110
|
except:
|
|
1111
|
try:
|
|
1111
|
try:
|
|
1112
|
# all still in an except block so we catch
|
|
1112
|
# all still in an except block so we catch
|
|
1113
|
# getattr raising
|
|
1113
|
# getattr raising
|
|
1114
|
name = getattr(value, '__name__', None)
|
|
1114
|
name = getattr(value, '__name__', None)
|
|
1115
|
if name:
|
|
1115
|
if name:
|
|
1116
|
# ick, recursion
|
|
1116
|
# ick, recursion
|
|
1117
|
return text_repr(name)
|
|
1117
|
return text_repr(name)
|
|
1118
|
klass = getattr(value, '__class__', None)
|
|
1118
|
klass = getattr(value, '__class__', None)
|
|
1119
|
if klass:
|
|
1119
|
if klass:
|
|
1120
|
return '%s instance' % text_repr(klass)
|
|
1120
|
return '%s instance' % text_repr(klass)
|
|
1121
|
except KeyboardInterrupt:
|
|
1121
|
except KeyboardInterrupt:
|
|
1122
|
raise
|
|
1122
|
raise
|
|
1123
|
except:
|
|
1123
|
except:
|
|
1124
|
return 'UNRECOVERABLE REPR FAILURE'
|
|
1124
|
return 'UNRECOVERABLE REPR FAILURE'
|
|
1125
|
|
|
1125
|
|
|
1126
|
|
|
1126
|
|
|
1127
|
def eqrepr(value, repr=text_repr):
|
|
1127
|
def eqrepr(value, repr=text_repr):
|
|
1128
|
return '=%s' % repr(value)
|
|
1128
|
return '=%s' % repr(value)
|
|
1129
|
|
|
1129
|
|
|
1130
|
|
|
1130
|
|
|
1131
|
def nullrepr(value, repr=text_repr):
|
|
1131
|
def nullrepr(value, repr=text_repr):
|
|
1132
|
return ''
|
|
1132
|
return ''
|