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Move most readline code from InteractiveShell to terminal subclass...
Move most readline code from InteractiveShell to terminal subclass This is the first stage of my effort to use prompt_toolkit for the terminal interface. My plan is to create a new subclass of InteractiveShell which deals with the terminal using prompt_toolkit instead of readline. To facilitate this, I am first trying to separate as much of the readline code as possible out of InteractiveShell to the TerminalInteractiveShell subclass (I don't intend the new subclass to inherit from TIS). I haven't moved any of the config options relating to readline yet, because moving them will break some people's existing config files. But if we're switching to prompt_toolkit by default, readline related config is going to be broken anyway.
Scott Sanderson - - Load All Authors

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error.py
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/ IPython / core / error.py
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# encoding: utf-8
"""
Global exception classes for IPython.core.
Authors:
* Brian Granger
* Fernando Perez
* Min Ragan-Kelley
Notes
-----
"""
#-----------------------------------------------------------------------------
# Copyright (C) 2008 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
#-----------------------------------------------------------------------------
#-----------------------------------------------------------------------------
# Exception classes
#-----------------------------------------------------------------------------
class IPythonCoreError(Exception):
pass
class TryNext(IPythonCoreError):
"""Try next hook exception.
Raise this in your hook function to indicate that the next hook handler
should be used to handle the operation.
"""
class UsageError(IPythonCoreError):
"""Error in magic function arguments, etc.
Something that probably won't warrant a full traceback, but should
nevertheless interrupt a macro / batch file.
"""
class StdinNotImplementedError(IPythonCoreError, NotImplementedError):
"""raw_input was requested in a context where it is not supported
For use in IPython kernels, where only some frontends may support
stdin requests.
"""
class InputRejected(Exception):
"""Input rejected by ast transformer.
Raise this in your NodeTransformer to indicate that InteractiveShell should
not execute the supplied input.
"""