IPython/core/error.py

# encoding: utf-8
"""
Global exception classes for IPython.core.

Authors:

* Brian Granger
* Fernando Perez
* Min Ragan-Kelley

Notes
-----
"""

#-----------------------------------------------------------------------------
#  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
#-----------------------------------------------------------------------------

#-----------------------------------------------------------------------------
# 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.
    """