zopefoundation / zope.component / 3829079989

3829079989

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Jens Vagelpohl 
- prepare release 5.1.0

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75.0
/src/zope/component/_compat.py
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##############################################################################
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#
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# Copyright (c) 2001, 2002 Zope Foundation and Contributors.
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# All Rights Reserved.
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#
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# This software is subject to the provisions of the Zope Public License,
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# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
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# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
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# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
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# FOR A PARTICULAR PURPOSE.
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#
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##############################################################################
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import sys




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import types




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if sys.version_info[0] < 3: #pragma NO COVER










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    import cPickle as _pickle










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    CLASS_TYPES = (type, types.ClassType)










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    PYTHON3 = False










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    PYTHON2 = True










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else: #pragma NO COVER










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    import pickle as _pickle










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    CLASS_TYPES = (type,)










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    PYTHON3 = True










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    PYTHON2 = False










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# Prior to https://github.com/zopefoundation/zope.security/issues/71










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# zope.security cannot be imported if zope.interface is enforcing










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# strict resolution orders. But because zope.security has a dependency










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# on this library, and older versions of this library also have problems










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# with strict resolution orders, we have a chicken-and-egg scenario. In the










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# interim, our only choice is to skip it. (But we don't want a hard dependency










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# on zope.interface 5.0, so we do a conditional import.)










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ZOPE_SECURITY_NOT_AVAILABLE_EX = (ImportError,)




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try:




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    from zope.interface.ro import InconsistentResolutionOrderError




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except ImportError:




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    pass




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else:










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    ZOPE_SECURITY_NOT_AVAILABLE_EX += (InconsistentResolutionOrderError,)




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