mirror of https://github.com/pypa/pip
24 lines
739 B
Python
24 lines
739 B
Python
"""Utilities for providing backward compatibility."""
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from pip._vendor import six
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def get_exc_info_from_future(future):
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"""
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Get an exc_info value from a Future.
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Given a a Future instance, retrieve an exc_info value suitable for passing
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in as the exc_info parameter to logging.Logger.log() and related methods.
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On Python 2, this will be a (type, value, traceback) triple.
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On Python 3, this will be an exception instance (with embedded traceback).
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If there was no exception, None is returned on both versions of Python.
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"""
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if six.PY3:
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return future.exception()
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else:
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ex, tb = future.exception_info()
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if ex is None:
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return None
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return type(ex), ex, tb
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