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#!/usr/bin/env python
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# encoding: utf-8
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"""
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The :class:`~IPython.core.newapplication.Application` object for the command
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line :command:`ipython` program.
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Authors
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-------
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* Brian Granger
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* Fernando Perez
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* Min Ragan-Kelley
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008-2010 The IPython Development Team
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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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# the file COPYING, distributed as part of this software.
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#-----------------------------------------------------------------------------
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#-----------------------------------------------------------------------------
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# Imports
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#-----------------------------------------------------------------------------
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from __future__ import absolute_import
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import logging
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import os
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import sys
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from IPython.config.loader import (
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Config, PyFileConfigLoader
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)
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from IPython.config.application import boolean_flag
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from IPython.core import release
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from IPython.core import usage
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from IPython.core.crashhandler import CrashHandler
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from IPython.core.formatters import PlainTextFormatter
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from IPython.core.newapplication import (
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ProfileDir, BaseIPythonApplication, base_flags, base_aliases
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)
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from IPython.frontend.terminal.interactiveshell import TerminalInteractiveShell
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from IPython.lib import inputhook
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from IPython.utils.path import filefind, get_ipython_dir, check_for_old_config
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from IPython.utils.traitlets import (
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Bool, Unicode, Dict, Instance, List,CaselessStrEnum
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)
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#-----------------------------------------------------------------------------
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# Globals, utilities and helpers
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#-----------------------------------------------------------------------------
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#: The default config file name for this application.
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default_config_file_name = u'ipython_config.py'
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#-----------------------------------------------------------------------------
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# Crash handler for this application
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#-----------------------------------------------------------------------------
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_message_template = """\
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Oops, $self.app_name crashed. We do our best to make it stable, but...
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A crash report was automatically generated with the following information:
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- A verbatim copy of the crash traceback.
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- A copy of your input history during this session.
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- Data on your current $self.app_name configuration.
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It was left in the file named:
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\t'$self.crash_report_fname'
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If you can email this file to the developers, the information in it will help
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them in understanding and correcting the problem.
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You can mail it to: $self.contact_name at $self.contact_email
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with the subject '$self.app_name Crash Report'.
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If you want to do it now, the following command will work (under Unix):
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mail -s '$self.app_name Crash Report' $self.contact_email < $self.crash_report_fname
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To ensure accurate tracking of this issue, please file a report about it at:
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$self.bug_tracker
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"""
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class IPAppCrashHandler(CrashHandler):
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"""sys.excepthook for IPython itself, leaves a detailed report on disk."""
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message_template = _message_template
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def __init__(self, app):
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contact_name = release.authors['Fernando'][0]
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contact_email = release.authors['Fernando'][1]
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bug_tracker = 'http://github.com/ipython/ipython/issues'
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super(IPAppCrashHandler,self).__init__(
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app, contact_name, contact_email, bug_tracker
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)
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def make_report(self,traceback):
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"""Return a string containing a crash report."""
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sec_sep = self.section_sep
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# Start with parent report
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report = [super(IPAppCrashHandler, self).make_report(traceback)]
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# Add interactive-specific info we may have
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rpt_add = report.append
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try:
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rpt_add(sec_sep+"History of session input:")
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for line in self.app.shell.user_ns['_ih']:
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rpt_add(line)
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rpt_add('\n*** Last line of input (may not be in above history):\n')
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rpt_add(self.app.shell._last_input_line+'\n')
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except:
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pass
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return ''.join(report)
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#-----------------------------------------------------------------------------
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# Aliases and Flags
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#-----------------------------------------------------------------------------
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flags = dict(base_flags)
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flags.update({
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})
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addflag = lambda *args: flags.update(boolean_flag(*args))
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addflag('autoindent', 'InteractiveShell.autoindent',
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'Turn on autoindenting.', 'Turn off autoindenting.'
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)
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addflag('automagic', 'InteractiveShell.automagic',
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"""Turn on the auto calling of magic commands. Type %%magic at the
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IPython prompt for more information.""",
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'Turn off the auto calling of magic commands.'
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)
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addflag('autoedit-syntax', 'TerminalInteractiveShell.autoedit_syntax',
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'Turn on auto editing of files with syntax errors.',
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'Turn off auto editing of files with syntax errors.'
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)
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addflag('banner', 'IPythonApp.display_banner',
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"Display a banner upon starting IPython.",
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"Don't display a banner upon starting IPython."
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)
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addflag('pdb', 'InteractiveShell.pdb',
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"Enable auto calling the pdb debugger after every exception.",
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"Disable auto calling the pdb debugger after every exception."
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)
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addflag('pprint', 'PlainTextFormatter.pprint',
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"Enable auto pretty printing of results.",
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"Disable auto auto pretty printing of results."
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)
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addflag('color-info', 'InteractiveShell.color_info',
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"""IPython can display information about objects via a set of func-
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tions, and optionally can use colors for this, syntax highlighting
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source code and various other elements. However, because this
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information is passed through a pager (like 'less') and many pagers get
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confused with color codes, this option is off by default. You can test
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it and turn it on permanently in your ipython_config.py file if it
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works for you. Test it and turn it on permanently if it works with
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your system. The magic function %%color_info allows you to toggle this
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inter- actively for testing.""",
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"Disable using colors for info related things."
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)
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addflag('confirm-exit', 'TerminalInteractiveShell.confirm_exit',
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"""Set to confirm when you try to exit IPython with an EOF (Control-D
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in Unix, Control-Z/Enter in Windows). By typing 'exit' or 'quit',
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you can force a direct exit without any confirmation.""",
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"Don't prompt the user when exiting."
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)
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addflag('deep-reload', 'InteractiveShell.deep_reload',
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"""Enable deep (recursive) reloading by default. IPython can use the
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deep_reload module which reloads changes in modules recursively (it
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replaces the reload() function, so you don't need to change anything to
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use it). deep_reload() forces a full reload of modules whose code may
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have changed, which the default reload() function does not. When
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deep_reload is off, IPython will use the normal reload(), but
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deep_reload will still be available as dreload(). This feature is off
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by default [which means that you have both normal reload() and
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dreload()].""",
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"Disable deep (recursive) reloading by default."
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)
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addflag('readline', 'InteractiveShell.readline_use',
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"Enable readline for command line usage.",
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"Disable readline for command line usage."
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)
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addflag('term-title', 'TerminalInteractiveShell.term_title',
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"Enable auto setting the terminal title.",
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"Disable auto setting the terminal title."
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)
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classic_config = Config()
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classic_config.InteractiveShell.cache_size = 0
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classic_config.PlainTextFormatter.pprint = False
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classic_config.InteractiveShell.prompt_in1 = '>>> '
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classic_config.InteractiveShell.prompt_in2 = '... '
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classic_config.InteractiveShell.prompt_out = ''
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classic_config.InteractiveShell.separate_in = ''
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classic_config.InteractiveShell.separate_out = ''
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classic_config.InteractiveShell.separate_out2 = ''
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classic_config.InteractiveShell.colors = 'NoColor'
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classic_config.InteractiveShell.xmode = 'Plain'
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flags['classic']=(
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classic_config,
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"Gives IPython a similar feel to the classic Python prompt."
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)
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# # log doesn't make so much sense this way anymore
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# paa('--log','-l',
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# action='store_true', dest='InteractiveShell.logstart',
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# help="Start logging to the default log file (./ipython_log.py).")
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#
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# # quick is harder to implement
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flags['quick']=(
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{'IPythonApp' : {'quick' : True}},
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"Enable quick startup with no config files."
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)
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nosep_config = Config()
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nosep_config.InteractiveShell.separate_in = ''
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nosep_config.InteractiveShell.separate_out = ''
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nosep_config.InteractiveShell.separate_out2 = ''
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flags['nosep']=(nosep_config, "Eliminate all spacing between prompts.")
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flags['i'] = (
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{'IPythonApp' : {'force_interact' : True}},
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"If running code from the command line, become interactive afterwards."
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)
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flags['pylab'] = (
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{'IPythonApp' : {'pylab' : 'auto'}},
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"""Pre-load matplotlib and numpy for interactive use with
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the default matplotlib backend."""
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)
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aliases = dict(base_aliases)
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# it's possible we don't want short aliases for *all* of these:
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aliases.update(dict(
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autocall='InteractiveShell.autocall',
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cache_size='InteractiveShell.cache_size',
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colors='InteractiveShell.colors',
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editor='TerminalInteractiveShell.editor',
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logfile='InteractiveShell.logfile',
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log_append='InteractiveShell.logappend',
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pi1='InteractiveShell.prompt_in1',
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pi2='InteractiveShell.prompt_in1',
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po='InteractiveShell.prompt_out',
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sl='TerminalInteractiveShell.screen_length',
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si='InteractiveShell.separate_in',
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so='InteractiveShell.separate_out',
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so2='InteractiveShell.separate_out2',
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xmode='InteractiveShell.xmode',
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c='IPythonApp.code_to_run',
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ext='IPythonApp.extra_extension',
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gui='IPythonApp.gui',
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pylab='IPythonApp.pylab',
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))
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#-----------------------------------------------------------------------------
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# Main classes and functions
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#-----------------------------------------------------------------------------
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class IPythonApp(BaseIPythonApplication):
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name = u'ipython'
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description = usage.cl_usage
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# command_line_loader = IPAppConfigLoader
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default_config_file_name = default_config_file_name
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crash_handler_class = IPAppCrashHandler
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flags = Dict(flags)
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aliases = Dict(aliases)
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classes = [TerminalInteractiveShell, ProfileDir, PlainTextFormatter]
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# *do* autocreate requested profile
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auto_create=Bool(True)
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copy_config_files=Bool(True)
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# configurables
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ignore_old_config=Bool(False, config=True,
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help="Suppress warning messages about legacy config files"
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)
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quick = Bool(False, config=True,
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help="""Start IPython quickly by skipping the loading of config files."""
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)
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def _quick_changed(self, name, old, new):
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if new:
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self.load_config_file = lambda *a, **kw: None
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self.ignore_old_config=True
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gui = CaselessStrEnum(('qt','wx','gtk'), config=True,
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help="Enable GUI event loop integration ('qt', 'wx', 'gtk')."
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)
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pylab = CaselessStrEnum(['tk', 'qt', 'wx', 'gtk', 'osx', 'auto'],
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config=True,
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help="""Pre-load matplotlib and numpy for interactive use,
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selecting a particular matplotlib backend and loop integration.
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"""
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)
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display_banner = Bool(True, config=True,
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help="Whether to display a banner upon starting IPython."
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)
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extensions = List(Unicode, config=True,
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help="A list of dotted module names of IPython extensions to load."
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)
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extra_extension = Unicode('', config=True,
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help="dotted module name of an IPython extension to load."
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)
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def _extra_extension_changed(self, name, old, new):
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if new:
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# add to self.extensions
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self.extensions.append(new)
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# if there is code of files to run from the cmd line, don't interact
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# unless the --i flag (App.force_interact) is true.
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force_interact = Bool(False, config=True,
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help="""If a command or file is given via the command-line,
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e.g. 'ipython foo.py"""
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)
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def _force_interact_changed(self, name, old, new):
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if new:
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self.interact = True
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exec_files = List(Unicode, config=True,
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help="""List of files to run at IPython startup."""
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)
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file_to_run = Unicode('', config=True,
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help="""A file to be run""")
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def _file_to_run_changed(self, name, old, new):
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if new and not self.force_interact:
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self.interact = False
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exec_lines = List(Unicode, config=True,
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help="""lines of code to run at IPython startup."""
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)
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code_to_run = Unicode('', config=True,
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help="Execute the given command string."
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)
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_code_to_run_changed = _file_to_run_changed
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# internal, not-configurable
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interact=Bool(True)
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def initialize(self, argv=None):
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"""Do actions after construct, but before starting the app."""
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super(IPythonApp, self).initialize(argv)
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if not self.ignore_old_config:
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check_for_old_config(self.ipython_dir)
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# print self.extra_args
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if self.extra_args:
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self.file_to_run = self.extra_args[0]
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# create the shell
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self.init_shell()
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# and draw the banner
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self.init_banner()
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# Now a variety of things that happen after the banner is printed.
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self.init_gui_pylab()
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self.init_extensions()
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self.init_code()
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def init_shell(self):
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"""initialize the InteractiveShell instance"""
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# I am a little hesitant to put these into InteractiveShell itself.
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# But that might be the place for them
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sys.path.insert(0, '')
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# Create an InteractiveShell instance.
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# shell.display_banner should always be False for the terminal
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# based app, because we call shell.show_banner() by hand below
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# so the banner shows *before* all extension loading stuff.
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self.shell = TerminalInteractiveShell.instance(config=self.config,
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display_banner=False, profile_dir=self.profile_dir,
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ipython_dir=self.ipython_dir)
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def init_banner(self):
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"""optionally display the banner"""
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if self.display_banner and self.interact:
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self.shell.show_banner()
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# Make sure there is a space below the banner.
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if self.log_level <= logging.INFO: print
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def init_gui_pylab(self):
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"""Enable GUI event loop integration, taking pylab into account."""
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gui = self.gui
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# Using `pylab` will also require gui activation, though which toolkit
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# to use may be chosen automatically based on mpl configuration.
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if self.pylab:
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activate = self.shell.enable_pylab
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if self.pylab == 'auto':
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gui = None
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else:
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gui = self.pylab
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else:
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# Enable only GUI integration, no pylab
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activate = inputhook.enable_gui
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if gui or self.pylab:
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try:
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self.log.info("Enabling GUI event loop integration, "
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"toolkit=%s, pylab=%s" % (gui, self.pylab) )
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activate(gui)
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except:
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self.log.warn("Error in enabling GUI event loop integration:")
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self.shell.showtraceback()
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|
|
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def init_extensions(self):
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"""Load all IPython extensions in IPythonApp.extensions.
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This uses the :meth:`ExtensionManager.load_extensions` to load all
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the extensions listed in ``self.extensions``.
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"""
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|
if not self.extensions:
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return
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try:
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self.log.debug("Loading IPython extensions...")
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extensions = self.extensions
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for ext in extensions:
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try:
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self.log.info("Loading IPython extension: %s" % ext)
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self.shell.extension_manager.load_extension(ext)
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|
except:
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|
|
self.log.warn("Error in loading extension: %s" % ext)
|
|
|
self.shell.showtraceback()
|
|
|
except:
|
|
|
self.log.warn("Unknown error in loading extensions:")
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
def init_code(self):
|
|
|
"""run the pre-flight code, specified via exec_lines"""
|
|
|
self._run_exec_lines()
|
|
|
self._run_exec_files()
|
|
|
self._run_cmd_line_code()
|
|
|
|
|
|
def _run_exec_lines(self):
|
|
|
"""Run lines of code in IPythonApp.exec_lines in the user's namespace."""
|
|
|
if not self.exec_lines:
|
|
|
return
|
|
|
try:
|
|
|
self.log.debug("Running code from IPythonApp.exec_lines...")
|
|
|
for line in self.exec_lines:
|
|
|
try:
|
|
|
self.log.info("Running code in user namespace: %s" %
|
|
|
line)
|
|
|
self.shell.run_cell(line, store_history=False)
|
|
|
except:
|
|
|
self.log.warn("Error in executing line in user "
|
|
|
"namespace: %s" % line)
|
|
|
self.shell.showtraceback()
|
|
|
except:
|
|
|
self.log.warn("Unknown error in handling IPythonApp.exec_lines:")
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
def _exec_file(self, fname):
|
|
|
full_filename = filefind(fname, [u'.', self.ipython_dir])
|
|
|
if os.path.isfile(full_filename):
|
|
|
if full_filename.endswith(u'.py'):
|
|
|
self.log.info("Running file in user namespace: %s" %
|
|
|
full_filename)
|
|
|
# Ensure that __file__ is always defined to match Python behavior
|
|
|
self.shell.user_ns['__file__'] = fname
|
|
|
try:
|
|
|
self.shell.safe_execfile(full_filename, self.shell.user_ns)
|
|
|
finally:
|
|
|
del self.shell.user_ns['__file__']
|
|
|
elif full_filename.endswith('.ipy'):
|
|
|
self.log.info("Running file in user namespace: %s" %
|
|
|
full_filename)
|
|
|
self.shell.safe_execfile_ipy(full_filename)
|
|
|
else:
|
|
|
self.log.warn("File does not have a .py or .ipy extension: <%s>"
|
|
|
% full_filename)
|
|
|
|
|
|
def _run_exec_files(self):
|
|
|
"""Run files from IPythonApp.exec_files"""
|
|
|
if not self.exec_files:
|
|
|
return
|
|
|
|
|
|
self.log.debug("Running files in IPythonApp.exec_files...")
|
|
|
try:
|
|
|
for fname in self.exec_files:
|
|
|
self._exec_file(fname)
|
|
|
except:
|
|
|
self.log.warn("Unknown error in handling IPythonApp.exec_files:")
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
def _run_cmd_line_code(self):
|
|
|
"""Run code or file specified at the command-line"""
|
|
|
if self.code_to_run:
|
|
|
line = self.code_to_run
|
|
|
try:
|
|
|
self.log.info("Running code given at command line (c=): %s" %
|
|
|
line)
|
|
|
self.shell.run_cell(line, store_history=False)
|
|
|
except:
|
|
|
self.log.warn("Error in executing line in user namespace: %s" %
|
|
|
line)
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
# Like Python itself, ignore the second if the first of these is present
|
|
|
elif self.file_to_run:
|
|
|
fname = self.file_to_run
|
|
|
try:
|
|
|
self._exec_file(fname)
|
|
|
except:
|
|
|
self.log.warn("Error in executing file in user namespace: %s" %
|
|
|
fname)
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
|
|
|
def start(self):
|
|
|
# perform any prexec steps:
|
|
|
if self.interact:
|
|
|
self.log.debug("Starting IPython's mainloop...")
|
|
|
self.shell.mainloop()
|
|
|
else:
|
|
|
self.log.debug("IPython not interactive...")
|
|
|
|
|
|
|
|
|
def load_default_config(ipython_dir=None):
|
|
|
"""Load the default config file from the default ipython_dir.
|
|
|
|
|
|
This is useful for embedded shells.
|
|
|
"""
|
|
|
if ipython_dir is None:
|
|
|
ipython_dir = get_ipython_dir()
|
|
|
profile_dir = os.path.join(ipython_dir, 'profile_default')
|
|
|
cl = PyFileConfigLoader(default_config_file_name, profile_dir)
|
|
|
config = cl.load_config()
|
|
|
return config
|
|
|
|
|
|
|
|
|
def launch_new_instance():
|
|
|
"""Create and run a full blown IPython instance"""
|
|
|
app = IPythonApp()
|
|
|
app.initialize()
|
|
|
# print app.config
|
|
|
# print app.profile_dir.location
|
|
|
app.start()
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
|
launch_new_instance()
|
|
|
|
