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Viewing changes to eventlet/support/__init__.py

  • Committer: Bazaar Package Importer
  • Author(s): Soren Hansen
  • Date: 2010-08-23 08:54:30 UTC
  • Revision ID: james.westby@ubuntu.com-20100823085430-xmu81mc33go27hv9
Tags: upstream-0.9.10
Import upstream version 0.9.10

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eventlet/support/__init__.py
 
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import sys
 
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def get_errno(exc):
 
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    """ Get the error code out of socket.error objects.
 
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    socket.error in <2.5 does not have errno attribute
 
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    socket.error in 3.x does not allow indexing access
 
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    e.args[0] works for all.
 
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    There are cases when args[0] is not errno.
 
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    i.e. http://bugs.python.org/issue6471
 
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    Maybe there are cases when errno is set, but it is not the first argument?
 
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    """
 
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    try:
 
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        if exc.errno is not None: return exc.errno
 
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    except AttributeError:
 
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        pass
 
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    try:
 
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        return exc.args[0]
 
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    except IndexError:
 
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        return None
 
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if sys.version_info[0]<3:
 
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    from sys import exc_clear as clear_sys_exc_info
 
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else:
 
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    def clear_sys_exc_info():
 
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        """No-op In py3k. 
 
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        Exception information is not visible outside of except statements.
 
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        sys.exc_clear became obsolete and removed."""
 
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        pass
 
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if sys.version_info[0]==2 and sys.version_info[1]<5:
 
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    class BaseException:                      # pylint: disable-msg=W0622
 
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        # not subclassing from object() intentionally, because in
 
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        # that case "raise Timeout" fails with TypeError.
 
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        pass
 
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else:
 
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    from __builtin__ import BaseException