|
|
#!/usr/bin/env python
|
|
|
# encoding: utf-8
|
|
|
"""
|
|
|
A mixin for :class:`~IPython.core.application.Application` classes that
|
|
|
launch InteractiveShell instances, load extensions, etc.
|
|
|
|
|
|
Authors
|
|
|
-------
|
|
|
|
|
|
* Min Ragan-Kelley
|
|
|
"""
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Copyright (C) 2008-2011 The IPython Development Team
|
|
|
#
|
|
|
# Distributed under the terms of the BSD License. The full license is in
|
|
|
# the file COPYING, distributed as part of this software.
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Imports
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
from __future__ import absolute_import
|
|
|
|
|
|
import os
|
|
|
import sys
|
|
|
|
|
|
from IPython.config.application import boolean_flag
|
|
|
from IPython.config.configurable import Configurable
|
|
|
from IPython.config.loader import Config
|
|
|
from IPython.utils.path import filefind
|
|
|
from IPython.utils.traitlets import Unicode, Instance, List
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Aliases and Flags
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
shell_flags = {}
|
|
|
|
|
|
addflag = lambda *args: shell_flags.update(boolean_flag(*args))
|
|
|
addflag('autoindent', 'InteractiveShell.autoindent',
|
|
|
'Turn on autoindenting.', 'Turn off autoindenting.'
|
|
|
)
|
|
|
addflag('automagic', 'InteractiveShell.automagic',
|
|
|
"""Turn on the auto calling of magic commands. Type %%magic at the
|
|
|
IPython prompt for more information.""",
|
|
|
'Turn off the auto calling of magic commands.'
|
|
|
)
|
|
|
addflag('pdb', 'InteractiveShell.pdb',
|
|
|
"Enable auto calling the pdb debugger after every exception.",
|
|
|
"Disable auto calling the pdb debugger after every exception."
|
|
|
)
|
|
|
addflag('pprint', 'PlainTextFormatter.pprint',
|
|
|
"Enable auto pretty printing of results.",
|
|
|
"Disable auto auto pretty printing of results."
|
|
|
)
|
|
|
addflag('color-info', 'InteractiveShell.color_info',
|
|
|
"""IPython can display information about objects via a set of func-
|
|
|
tions, and optionally can use colors for this, syntax highlighting
|
|
|
source code and various other elements. However, because this
|
|
|
information is passed through a pager (like 'less') and many pagers get
|
|
|
confused with color codes, this option is off by default. You can test
|
|
|
it and turn it on permanently in your ipython_config.py file if it
|
|
|
works for you. Test it and turn it on permanently if it works with
|
|
|
your system. The magic function %%color_info allows you to toggle this
|
|
|
interactively for testing.""",
|
|
|
"Disable using colors for info related things."
|
|
|
)
|
|
|
addflag('deep-reload', 'InteractiveShell.deep_reload',
|
|
|
"""Enable deep (recursive) reloading by default. IPython can use the
|
|
|
deep_reload module which reloads changes in modules recursively (it
|
|
|
replaces the reload() function, so you don't need to change anything to
|
|
|
use it). deep_reload() forces a full reload of modules whose code may
|
|
|
have changed, which the default reload() function does not. When
|
|
|
deep_reload is off, IPython will use the normal reload(), but
|
|
|
deep_reload will still be available as dreload(). This feature is off
|
|
|
by default [which means that you have both normal reload() and
|
|
|
dreload()].""",
|
|
|
"Disable deep (recursive) reloading by default."
|
|
|
)
|
|
|
nosep_config = Config()
|
|
|
nosep_config.InteractiveShell.separate_in = ''
|
|
|
nosep_config.InteractiveShell.separate_out = ''
|
|
|
nosep_config.InteractiveShell.separate_out2 = ''
|
|
|
|
|
|
shell_flags['nosep']=(nosep_config, "Eliminate all spacing between prompts.")
|
|
|
|
|
|
|
|
|
# it's possible we don't want short aliases for *all* of these:
|
|
|
shell_aliases = dict(
|
|
|
autocall='InteractiveShell.autocall',
|
|
|
cache_size='InteractiveShell.cache_size',
|
|
|
colors='InteractiveShell.colors',
|
|
|
logfile='InteractiveShell.logfile',
|
|
|
log_append='InteractiveShell.logappend',
|
|
|
c='InteractiveShellApp.code_to_run',
|
|
|
ext='InteractiveShellApp.extra_extension',
|
|
|
)
|
|
|
|
|
|
#-----------------------------------------------------------------------------
|
|
|
# Main classes and functions
|
|
|
#-----------------------------------------------------------------------------
|
|
|
|
|
|
class InteractiveShellApp(Configurable):
|
|
|
"""A Mixin for applications that start InteractiveShell instances.
|
|
|
|
|
|
Provides configurables for loading extensions and executing files
|
|
|
as part of configuring a Shell environment.
|
|
|
|
|
|
Provides init_extensions() and init_code() methods, to be called
|
|
|
after init_shell(), which must be implemented by subclasses.
|
|
|
"""
|
|
|
extensions = List(Unicode, config=True,
|
|
|
help="A list of dotted module names of IPython extensions to load."
|
|
|
)
|
|
|
extra_extension = Unicode('', config=True,
|
|
|
help="dotted module name of an IPython extension to load."
|
|
|
)
|
|
|
def _extra_extension_changed(self, name, old, new):
|
|
|
if new:
|
|
|
# add to self.extensions
|
|
|
self.extensions.append(new)
|
|
|
|
|
|
exec_files = List(Unicode, config=True,
|
|
|
help="""List of files to run at IPython startup."""
|
|
|
)
|
|
|
file_to_run = Unicode('', config=True,
|
|
|
help="""A file to be run""")
|
|
|
|
|
|
exec_lines = List(Unicode, config=True,
|
|
|
help="""lines of code to run at IPython startup."""
|
|
|
)
|
|
|
code_to_run = Unicode('', config=True,
|
|
|
help="Execute the given command string."
|
|
|
)
|
|
|
shell = Instance('IPython.core.interactiveshell.InteractiveShellABC')
|
|
|
|
|
|
def init_shell(self):
|
|
|
raise NotImplementedError("Override in subclasses")
|
|
|
|
|
|
def init_extensions(self):
|
|
|
"""Load all IPython extensions in IPythonApp.extensions.
|
|
|
|
|
|
This uses the :meth:`ExtensionManager.load_extensions` to load all
|
|
|
the extensions listed in ``self.extensions``.
|
|
|
"""
|
|
|
if not self.extensions:
|
|
|
return
|
|
|
try:
|
|
|
self.log.debug("Loading IPython extensions...")
|
|
|
extensions = self.extensions
|
|
|
for ext in extensions:
|
|
|
try:
|
|
|
self.log.info("Loading IPython extension: %s" % ext)
|
|
|
self.shell.extension_manager.load_extension(ext)
|
|
|
except:
|
|
|
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()
|
|
|
|
|
|
|
