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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.application.Application` object for the command
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line :command:`ipython` program.
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Authors:
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* Brian Granger
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* Fernando Perez
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Notes
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-----
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"""
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#-----------------------------------------------------------------------------
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# Copyright (C) 2008-2009 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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import logging
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import os
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import sys
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from IPython.core import release
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from IPython.core.application import Application, BaseAppArgParseConfigLoader
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from IPython.core.error import UsageError
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from IPython.core.iplib import InteractiveShell
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from IPython.core.pylabtools import pylab_activate
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from IPython.config.loader import (
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NoConfigDefault,
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Config,
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PyFileConfigLoader
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)
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from IPython.lib import inputhook
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from IPython.utils.genutils import filefind, get_ipython_dir
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#-----------------------------------------------------------------------------
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# Utilities and helpers
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#-----------------------------------------------------------------------------
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ipython_desc = """
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A Python shell with automatic history (input and output), dynamic object
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introspection, easier configuration, command completion, access to the system
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shell and more.
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"""
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#-----------------------------------------------------------------------------
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# Main classes and functions
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#-----------------------------------------------------------------------------
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cl_args = (
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(('--autocall',), dict(
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type=int, dest='InteractiveShell.autocall', default=NoConfigDefault,
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help='Set the autocall value (0,1,2).',
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metavar='InteractiveShell.autocall')
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),
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(('--autoindent',), dict(
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action='store_true', dest='InteractiveShell.autoindent', default=NoConfigDefault,
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help='Turn on autoindenting.')
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),
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(('--no-autoindent',), dict(
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action='store_false', dest='InteractiveShell.autoindent', default=NoConfigDefault,
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help='Turn off autoindenting.')
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),
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(('--automagic',), dict(
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action='store_true', dest='InteractiveShell.automagic', default=NoConfigDefault,
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help='Turn on the auto calling of magic commands.')
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),
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(('--no-automagic',), dict(
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action='store_false', dest='InteractiveShell.automagic', default=NoConfigDefault,
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help='Turn off the auto calling of magic commands.')
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),
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(('--autoedit-syntax',), dict(
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action='store_true', dest='InteractiveShell.autoedit_syntax', default=NoConfigDefault,
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help='Turn on auto editing of files with syntax errors.')
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),
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(('--no-autoedit-syntax',), dict(
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action='store_false', dest='InteractiveShell.autoedit_syntax', default=NoConfigDefault,
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help='Turn off auto editing of files with syntax errors.')
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),
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(('--banner',), dict(
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action='store_true', dest='Global.display_banner', default=NoConfigDefault,
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help='Display a banner upon starting IPython.')
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),
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(('--no-banner',), dict(
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action='store_false', dest='Global.display_banner', default=NoConfigDefault,
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help="Don't display a banner upon starting IPython.")
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),
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(('--cache-size',), dict(
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type=int, dest='InteractiveShell.cache_size', default=NoConfigDefault,
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help="Set the size of the output cache.",
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metavar='InteractiveShell.cache_size')
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),
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(('--classic',), dict(
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action='store_true', dest='Global.classic', default=NoConfigDefault,
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help="Gives IPython a similar feel to the classic Python prompt.")
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),
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(('--colors',), dict(
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type=str, dest='InteractiveShell.colors', default=NoConfigDefault,
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help="Set the color scheme (NoColor, Linux, and LightBG).",
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metavar='InteractiveShell.colors')
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),
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(('--color-info',), dict(
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action='store_true', dest='InteractiveShell.color_info', default=NoConfigDefault,
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help="Enable using colors for info related things.")
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),
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(('--no-color-info',), dict(
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action='store_false', dest='InteractiveShell.color_info', default=NoConfigDefault,
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help="Disable using colors for info related things.")
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),
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(('--confirm-exit',), dict(
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action='store_true', dest='InteractiveShell.confirm_exit', default=NoConfigDefault,
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help="Prompt the user when existing.")
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),
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(('--no-confirm-exit',), dict(
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action='store_false', dest='InteractiveShell.confirm_exit', default=NoConfigDefault,
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help="Don't prompt the user when existing.")
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),
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(('--deep-reload',), dict(
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action='store_true', dest='InteractiveShell.deep_reload', default=NoConfigDefault,
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help="Enable deep (recursive) reloading by default.")
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),
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(('--no-deep-reload',), dict(
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action='store_false', dest='InteractiveShell.deep_reload', default=NoConfigDefault,
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help="Disable deep (recursive) reloading by default.")
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),
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(('--editor',), dict(
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type=str, dest='InteractiveShell.editor', default=NoConfigDefault,
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help="Set the editor used by IPython (default to $EDITOR/vi/notepad).",
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metavar='InteractiveShell.editor')
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),
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(('--log','-l'), dict(
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action='store_true', dest='InteractiveShell.logstart', default=NoConfigDefault,
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help="Start logging to the default file (./ipython_log.py).")
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),
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(('--logfile','-lf'), dict(
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type=unicode, dest='InteractiveShell.logfile', default=NoConfigDefault,
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help="Start logging to logfile.",
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metavar='InteractiveShell.logfile')
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),
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(('--log-append','-la'), dict(
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type=unicode, dest='InteractiveShell.logappend', default=NoConfigDefault,
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help="Start logging to the give file in append mode.",
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metavar='InteractiveShell.logfile')
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),
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(('--pdb',), dict(
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action='store_true', dest='InteractiveShell.pdb', default=NoConfigDefault,
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help="Enable auto calling the pdb debugger after every exception.")
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),
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(('--no-pdb',), dict(
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action='store_false', dest='InteractiveShell.pdb', default=NoConfigDefault,
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help="Disable auto calling the pdb debugger after every exception.")
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),
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(('--pprint',), dict(
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action='store_true', dest='InteractiveShell.pprint', default=NoConfigDefault,
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help="Enable auto pretty printing of results.")
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),
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(('--no-pprint',), dict(
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action='store_false', dest='InteractiveShell.pprint', default=NoConfigDefault,
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help="Disable auto auto pretty printing of results.")
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),
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(('--prompt-in1','-pi1'), dict(
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type=str, dest='InteractiveShell.prompt_in1', default=NoConfigDefault,
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help="Set the main input prompt ('In [\#]: ')",
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metavar='InteractiveShell.prompt_in1')
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),
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(('--prompt-in2','-pi2'), dict(
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type=str, dest='InteractiveShell.prompt_in2', default=NoConfigDefault,
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help="Set the secondary input prompt (' .\D.: ')",
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metavar='InteractiveShell.prompt_in2')
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),
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(('--prompt-out','-po'), dict(
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type=str, dest='InteractiveShell.prompt_out', default=NoConfigDefault,
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help="Set the output prompt ('Out[\#]:')",
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metavar='InteractiveShell.prompt_out')
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),
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(('--quick',), dict(
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action='store_true', dest='Global.quick', default=NoConfigDefault,
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help="Enable quick startup with no config files.")
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),
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(('--readline',), dict(
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action='store_true', dest='InteractiveShell.readline_use', default=NoConfigDefault,
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help="Enable readline for command line usage.")
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),
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(('--no-readline',), dict(
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action='store_false', dest='InteractiveShell.readline_use', default=NoConfigDefault,
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help="Disable readline for command line usage.")
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),
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(('--screen-length','-sl'), dict(
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type=int, dest='InteractiveShell.screen_length', default=NoConfigDefault,
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help='Number of lines on screen, used to control printing of long strings.',
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metavar='InteractiveShell.screen_length')
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),
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(('--separate-in','-si'), dict(
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type=str, dest='InteractiveShell.separate_in', default=NoConfigDefault,
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help="Separator before input prompts. Default '\n'.",
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metavar='InteractiveShell.separate_in')
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),
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(('--separate-out','-so'), dict(
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type=str, dest='InteractiveShell.separate_out', default=NoConfigDefault,
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help="Separator before output prompts. Default 0 (nothing).",
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metavar='InteractiveShell.separate_out')
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),
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(('--separate-out2','-so2'), dict(
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type=str, dest='InteractiveShell.separate_out2', default=NoConfigDefault,
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help="Separator after output prompts. Default 0 (nonight).",
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metavar='InteractiveShell.separate_out2')
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),
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(('-no-sep',), dict(
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action='store_true', dest='Global.nosep', default=NoConfigDefault,
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help="Eliminate all spacing between prompts.")
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),
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(('--term-title',), dict(
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action='store_true', dest='InteractiveShell.term_title', default=NoConfigDefault,
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help="Enable auto setting the terminal title.")
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),
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(('--no-term-title',), dict(
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action='store_false', dest='InteractiveShell.term_title', default=NoConfigDefault,
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help="Disable auto setting the terminal title.")
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),
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(('--xmode',), dict(
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type=str, dest='InteractiveShell.xmode', default=NoConfigDefault,
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help="Exception mode ('Plain','Context','Verbose')",
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metavar='InteractiveShell.xmode')
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),
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(('--ext',), dict(
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type=str, dest='Global.extra_extension', default=NoConfigDefault,
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help="The dotted module name of an IPython extension to load.",
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metavar='Global.extra_extension')
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),
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(('-c',), dict(
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type=str, dest='Global.code_to_run', default=NoConfigDefault,
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help="Execute the given command string.",
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metavar='Global.code_to_run')
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),
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(('-i',), dict(
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action='store_true', dest='Global.force_interact', default=NoConfigDefault,
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help="If running code from the command line, become interactive afterwards.")
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),
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# Options to start with GUI control enabled from the beginning
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(('--gui',), dict(
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type=str, dest='Global.gui', default=NoConfigDefault,
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help="Enable GUI event loop integration ('qt', 'wx', 'gtk').",
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metavar='gui-mode')
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),
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(('--pylab','-pylab'), dict(
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type=str, dest='Global.pylab', default=NoConfigDefault,
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nargs='?', const='auto', metavar='gui-mode',
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help="Pre-load matplotlib and numpy for interactive use. "+
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"If no value is given, the gui backend is matplotlib's, else use "+
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"one of: ['tk', 'qt', 'wx', 'gtk'].")
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),
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# Legacy GUI options. Leave them in for backwards compatibility, but the
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# 'thread' names are really a misnomer now.
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(('--wthread','-wthread'), dict(
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action='store_true', dest='Global.wthread', default=NoConfigDefault,
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help="Enable wxPython event loop integration "+
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"(DEPRECATED, use --gui wx)")
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),
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(('--q4thread','--qthread','-q4thread','-qthread'), dict(
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action='store_true', dest='Global.q4thread', default=NoConfigDefault,
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help="Enable Qt4 event loop integration. Qt3 is no longer supported. "+
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"(DEPRECATED, use --gui qt)")
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),
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(('--gthread','-gthread'), dict(
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action='store_true', dest='Global.gthread', default=NoConfigDefault,
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help="Enable GTK event loop integration. "+
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"(DEPRECATED, use --gui gtk)")
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),
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)
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class IPythonAppCLConfigLoader(BaseAppArgParseConfigLoader):
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arguments = cl_args
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default_config_file_name = u'ipython_config.py'
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class IPythonApp(Application):
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name = u'ipython'
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description = 'IPython: an enhanced interactive Python shell.'
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config_file_name = default_config_file_name
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def __init__(self, argv=None, **shell_params):
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"""Create a new IPythonApp.
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Parameters
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----------
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argv : optional, list
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If given, used as the command-line argv environment to read arguments
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from.
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shell_params : optional, dict
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All other keywords are passed to the :class:`iplib.InteractiveShell`
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constructor.
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"""
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super(IPythonApp, self).__init__(argv)
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self.shell_params = shell_params
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def create_default_config(self):
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super(IPythonApp, self).create_default_config()
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# Eliminate multiple lookups
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Global = self.default_config.Global
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# Set all default values
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Global.display_banner = True
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# If the -c flag is given or a file is given to run at the cmd line
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# like "ipython foo.py", normally we exit without starting the main
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# loop. The force_interact config variable allows a user to override
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# this and interact. It is also set by the -i cmd line flag, just
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# like Python.
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Global.force_interact = False
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# By default always interact by starting the IPython mainloop.
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Global.interact = True
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# No GUI integration by default
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Global.gui = False
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# Pylab off by default
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Global.pylab = False
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# Deprecated versions of gui support that used threading, we support
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# them just for bacwards compatibility as an alternate spelling for
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# '--gui X'
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Global.qthread = False
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Global.q4thread = False
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Global.wthread = False
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Global.gthread = False
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def create_command_line_config(self):
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"""Create and return a command line config loader."""
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return IPythonAppCLConfigLoader(self.argv,
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description=self.description,
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version=release.version
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)
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def load_file_config(self):
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if hasattr(self.command_line_config.Global, 'quick'):
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if self.command_line_config.Global.quick:
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self.file_config = Config()
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return
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super(IPythonApp, self).load_file_config()
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def post_load_file_config(self):
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if hasattr(self.command_line_config.Global, 'extra_extension'):
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if not hasattr(self.file_config.Global, 'extensions'):
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self.file_config.Global.extensions = []
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self.file_config.Global.extensions.append(
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self.command_line_config.Global.extra_extension)
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del self.command_line_config.Global.extra_extension
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def pre_construct(self):
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config = self.master_config
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if hasattr(config.Global, 'classic'):
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if config.Global.classic:
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config.InteractiveShell.cache_size = 0
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config.InteractiveShell.pprint = 0
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config.InteractiveShell.prompt_in1 = '>>> '
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config.InteractiveShell.prompt_in2 = '... '
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config.InteractiveShell.prompt_out = ''
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config.InteractiveShell.separate_in = \
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config.InteractiveShell.separate_out = \
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config.InteractiveShell.separate_out2 = ''
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config.InteractiveShell.colors = 'NoColor'
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config.InteractiveShell.xmode = 'Plain'
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if hasattr(config.Global, 'nosep'):
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if config.Global.nosep:
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config.InteractiveShell.separate_in = \
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config.InteractiveShell.separate_out = \
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config.InteractiveShell.separate_out2 = ''
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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 (Global.force_interact) is true.
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code_to_run = config.Global.get('code_to_run','')
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file_to_run = False
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if len(self.extra_args)>=1:
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if self.extra_args[0]:
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file_to_run = True
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if file_to_run or code_to_run:
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if not config.Global.force_interact:
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config.Global.interact = False
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def construct(self):
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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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self.shell = InteractiveShell(None, self.master_config,
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**self.shell_params )
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|
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def post_construct(self):
|
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"""Do actions after construct, but before starting the app."""
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|
config = self.master_config
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|
|
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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.display_banner = False
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|
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if config.Global.display_banner and \
|
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config.Global.interact:
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|
self.shell.show_banner()
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|
|
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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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|
# Now a variety of things that happen after the banner is printed.
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self._enable_gui_pylab()
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self._load_extensions()
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self._run_exec_lines()
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self._run_exec_files()
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self._run_cmd_line_code()
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self._configure_xmode()
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|
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def _enable_gui_pylab(self):
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|
"""Enable GUI event loop integration, taking pylab into account."""
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|
Global = self.master_config.Global
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|
|
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|
# Select which gui to use
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if Global.gui:
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|
gui = Global.gui
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|
# The following are deprecated, but there's likely to be a lot of use
|
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# of this form out there, so we might as well support it for now. But
|
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# the --gui option above takes precedence.
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|
elif Global.wthread:
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gui = inputhook.GUI_WX
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elif Global.qthread:
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gui = inputhook.GUI_QT
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|
elif Global.gthread:
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|
gui = inputhook.GUI_GTK
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else:
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|
gui = None
|
|
|
|
|
|
# Using --pylab will also require gui activation, though which toolkit
|
|
|
# to use may be chosen automatically based on mpl configuration.
|
|
|
if Global.pylab:
|
|
|
activate = self.shell.enable_pylab
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|
if Global.pylab == 'auto':
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|
gui = None
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|
else:
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|
|
gui = Global.pylab
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else:
|
|
|
# Enable only GUI integration, no pylab
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|
|
activate = inputhook.enable_gui
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|
|
|
|
if gui or Global.pylab:
|
|
|
try:
|
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|
self.log.info("Enabling GUI event loop integration, "
|
|
|
"toolkit=%s, pylab=%s" % (gui, Global.pylab) )
|
|
|
activate(gui)
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|
except:
|
|
|
self.log.warn("Error in enabling GUI event loop integration:")
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
def _load_extensions(self):
|
|
|
"""Load all IPython extensions in Global.extensions.
|
|
|
|
|
|
This uses the :meth:`InteractiveShell.load_extensions` to load all
|
|
|
the extensions listed in ``self.master_config.Global.extensions``.
|
|
|
"""
|
|
|
try:
|
|
|
if hasattr(self.master_config.Global, 'extensions'):
|
|
|
self.log.debug("Loading IPython extensions...")
|
|
|
extensions = self.master_config.Global.extensions
|
|
|
for ext in extensions:
|
|
|
try:
|
|
|
self.log.info("Loading IPython extension: %s" % ext)
|
|
|
self.shell.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 _run_exec_lines(self):
|
|
|
"""Run lines of code in Global.exec_lines in the user's namespace."""
|
|
|
try:
|
|
|
if hasattr(self.master_config.Global, 'exec_lines'):
|
|
|
self.log.debug("Running code from Global.exec_lines...")
|
|
|
exec_lines = self.master_config.Global.exec_lines
|
|
|
for line in exec_lines:
|
|
|
try:
|
|
|
self.log.info("Running code in user namespace: %s" % line)
|
|
|
self.shell.runlines(line)
|
|
|
except:
|
|
|
self.log.warn("Error in executing line in user namespace: %s" % line)
|
|
|
self.shell.showtraceback()
|
|
|
except:
|
|
|
self.log.warn("Unknown error in handling Global.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)
|
|
|
self.shell.safe_execfile(full_filename, self.shell.user_ns)
|
|
|
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):
|
|
|
try:
|
|
|
if hasattr(self.master_config.Global, 'exec_files'):
|
|
|
self.log.debug("Running files in Global.exec_files...")
|
|
|
exec_files = self.master_config.Global.exec_files
|
|
|
for fname in exec_files:
|
|
|
self._exec_file(fname)
|
|
|
except:
|
|
|
self.log.warn("Unknown error in handling Global.exec_files:")
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
def _run_cmd_line_code(self):
|
|
|
if hasattr(self.master_config.Global, 'code_to_run'):
|
|
|
line = self.master_config.Global.code_to_run
|
|
|
try:
|
|
|
self.log.info("Running code given at command line (-c): %s" % line)
|
|
|
self.shell.runlines(line)
|
|
|
except:
|
|
|
self.log.warn("Error in executing line in user namespace: %s" % line)
|
|
|
self.shell.showtraceback()
|
|
|
return
|
|
|
# Like Python itself, ignore the second if the first of these is present
|
|
|
try:
|
|
|
fname = self.extra_args[0]
|
|
|
except:
|
|
|
pass
|
|
|
else:
|
|
|
try:
|
|
|
self._exec_file(fname)
|
|
|
except:
|
|
|
self.log.warn("Error in executing file in user namespace: %s" % fname)
|
|
|
self.shell.showtraceback()
|
|
|
|
|
|
def _configure_xmode(self):
|
|
|
# XXX - shouldn't this be read from the config? I'm still a little
|
|
|
# lost with all the details of handling the new config guys...
|
|
|
self.shell.InteractiveTB.set_mode(mode=self.shell.xmode)
|
|
|
|
|
|
def start_app(self):
|
|
|
if self.master_config.Global.interact:
|
|
|
self.log.debug("Starting IPython's mainloop...")
|
|
|
self.shell.mainloop()
|
|
|
else:
|
|
|
self.log.debug("IPython not interactive, start_app is no-op...")
|
|
|
|
|
|
|
|
|
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()
|
|
|
cl = PyFileConfigLoader(default_config_file_name, ipython_dir)
|
|
|
config = cl.load_config()
|
|
|
return config
|
|
|
|
|
|
|
|
|
def launch_new_instance():
|
|
|
"""Create and run a full blown IPython instance"""
|
|
|
app = IPythonApp()
|
|
|
app.start()
|
|
|
|
