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#!/usr/bin/env python
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# encoding: utf-8
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"""
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The main IPython application object
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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 os
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import sys
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import warnings
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from IPython.core.application import Application, IPythonArgParseConfigLoader
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from IPython.core import release
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from IPython.core.iplib import InteractiveShell
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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.utils.ipstruct import Struct
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from IPython.utils.genutils import 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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def threaded_shell_warning():
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msg = """
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The IPython threaded shells and their associated command line
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arguments (pylab/wthread/gthread/qthread/q4thread) have been
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deprecated. See the %gui magic for information on the new interface.
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"""
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warnings.warn(msg, category=DeprecationWarning, stacklevel=1)
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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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(('-noautoindent',), 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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(('-noautomagic',), 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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(('-noautoedit_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='InteractiveShell.display_banner', default=NoConfigDefault,
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help='Display a banner upon starting IPython.')
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),
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(('-nobanner',), dict(
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action='store_false', dest='InteractiveShell.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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(('-c',), dict(
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type=str, dest='InteractiveShell.c', default=NoConfigDefault,
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help="Execute the given command string.",
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metavar='InteractiveShell.c')
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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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(('-nocolor_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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(('-noconfirm_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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(('-nodeep_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=str, dest='InteractiveShell.logfile', default=NoConfigDefault,
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help="Specify the name of your logfile.",
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metavar='InteractiveShell.logfile')
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),
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(('-logplay','-lp'), dict(
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type=str, dest='InteractiveShell.logplay', default=NoConfigDefault,
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help="Re-play a log file and then append to it.",
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metavar='InteractiveShell.logplay')
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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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(('-nopdb',), 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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(('-nopprint',), 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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(('-noreadline',), 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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(('-nosep',), 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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(('-noterm_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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# These are only here to get the proper deprecation warnings
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(('-pylab','-wthread','-qthread','-q4thread','-gthread'), dict(
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action='store_true', dest='Global.threaded_shell', default=NoConfigDefault,
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help="These command line flags are deprecated, see the 'gui' magic.")
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),
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)
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class IPythonAppCLConfigLoader(IPythonArgParseConfigLoader):
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arguments = cl_args
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_default_config_file_name = 'ipython_config.py'
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class IPythonApp(Application):
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name = 'ipython'
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config_file_name = _default_config_file_name
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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(
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description=ipython_desc,
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version=release.version)
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def post_load_command_line_config(self):
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"""Do actions after loading cl config."""
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clc = self.command_line_config
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# Display the deprecation warnings about threaded shells
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if hasattr(clc.Global, 'threaded_shell'):
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threaded_shell_warning()
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del clc.Global['threaded_shell']
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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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"""Logic goes here."""
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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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# All this should be moved to traitlet handlers in InteractiveShell
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# But, currently InteractiveShell doesn't have support for changing
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# these values at runtime. Once we support that, this should
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# be moved there!!!
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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 = '0'
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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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# add personal ipythondir to sys.path so that users can put things in
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# there for customization
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sys.path.append(os.path.abspath(self.ipythondir))
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# Create an InteractiveShell instance
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self.shell = InteractiveShell(
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parent=None,
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config=self.master_config
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)
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def start_app(self):
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self.shell.mainloop()
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def load_default_config(ipythondir=None):
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"""Load the default config file from the default ipythondir.
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This is useful for embedded shells.
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"""
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if ipythondir is None:
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ipythondir = get_ipython_dir()
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cl = PyFileConfigLoader(_default_config_file_name, ipythondir)
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config = cl.load_config()
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return config
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if __name__ == '__main__':
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app = IPythonApp()
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app.start()
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