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# encoding: utf-8
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"""Object to manage sys.excepthook().
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Synchronous version: prints errors when called.
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"""
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__docformat__ = "restructuredtext en"
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#-------------------------------------------------------------------------------
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# Copyright (C) 2008 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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from traceback_trap import TracebackTrap
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from IPython.core.ultratb import ColorTB
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class SyncTracebackTrap(TracebackTrap):
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""" TracebackTrap that displays immediatly the traceback in addition
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to capturing it. Useful in frontends, as without this traceback trap,
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some tracebacks never get displayed.
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"""
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def __init__(self, sync_formatter=None, formatters=None,
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raiseException=True):
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"""
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sync_formatter: Callable to display the traceback.
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formatters: A list of formatters to apply.
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"""
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TracebackTrap.__init__(self, formatters=formatters)
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if sync_formatter is None:
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sync_formatter = ColorTB(color_scheme='LightBG')
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self.sync_formatter = sync_formatter
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self.raiseException = raiseException
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def hook(self, *args):
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""" This method actually implements the hook.
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"""
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self.args = args
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if not self.raiseException:
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print self.sync_formatter(*self.args)
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else:
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raise
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