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Merge pull request #923 from minrk/configmagic...
Merge pull request #923 from minrk/configmagic New %config magic to interactively manipulate all configurables. This allows users to type `%config Foo.bar = 5` to control any IPython configurable. The Magic class keeps a list of configurables which will be updated by the change, so any objects that should be accessible to this magic should be appended to `shell.configurables`. I started with everything I saw as configurable in InteractiveShell. ## Usage Use just `%config` to see what classes are available, and `%config Class` to get the trait info for that class. When setting values via` %config Class.trait = value` It is evaluated with user_ns in globals, so you can do arbitrary things like: ```python In [4]: default = 'png' In [5]: %config InlineBackendConfig.figure_format = raw_input('what figure format should we use? ') or default ``` ## Note This magic reveals just how much we *don't* use traits/config properly. Almost everything is attached to the InteractiveShell object, and has an effect exactly once during an `init_foo()` method, rather than allowing config propagation via `_trait_changed()` methods. For instance, IPCompleter has an `omit__names` attribute, but the configurable is `InteractiveShell.readline_omit__names`, which is clearly wrong. We've done a good job with config in *new* code, but I think existing code needs a pretty hefty pass to get configurables attached to the right objects, and getting logic like `%colors` into `shell._colors_changed`. Closes #903
Thomas Spura - - Load All Authors

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ipapi.py
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Brian Granger
Continuing a massive refactor of everything.
 r2205 # encoding: utf-8
"""
Brian Granger
Removed ipapi compatability layer and updated top-level functions....
 r2269 This module is *completely* deprecated and should no longer be used for
any purpose. Currently, we have a few parts of the core that have
not been componentized and thus, still rely on this module. When everything
has been made into a component, this module will be sent to deathrow.
Fernando Perez
Remove 2.3 compatibility, minor cleanups.
 r1414 """
#-----------------------------------------------------------------------------
Brian Granger
Continuing a massive refactor of everything.
 r2205 # Copyright (C) 2008-2009 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.
Fernando Perez
Remove 2.3 compatibility, minor cleanups.
 r1414 #-----------------------------------------------------------------------------
ville
initialization (no svn history)
 r988
Brian Granger
Continuing a massive refactor of everything.
 r2205 #-----------------------------------------------------------------------------
# Imports
#-----------------------------------------------------------------------------
Robert Kern
ENH: Allow non-dict namespaces. This involves a change in the ipapi for setting user namespaces.
 r1419
Brian Granger
Continuing a massive refactor of everything.
 r2205 #-----------------------------------------------------------------------------
# Classes and functions
#-----------------------------------------------------------------------------
Robert Kern
ENH: Allow non-dict namespaces. This involves a change in the ipapi for setting user namespaces.
 r1419
Brian Granger
ipapi.get now returns None if there are no InteractiveShells running....
 r2292
Brian Granger
Continuing a massive refactor of everything.
 r2205 def get():
Brian Granger
First draft of refactored Component->Configurable.
 r2731 """Get the global InteractiveShell instance."""
Brian Granger
Fixing two minor bugs....
 r2816 from IPython.core.interactiveshell import InteractiveShell
return InteractiveShell.instance()
Brian Granger
First draft of refactored Component->Configurable.
 r2731