OpenHome/venv/Lib/site-packages/pip/_vendor/tenacity/compat.py

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2021-07-21 21:33:05 +02:00
"""Utilities for providing backward compatibility."""
from pip._vendor import six
def get_exc_info_from_future(future):
"""
Get an exc_info value from a Future.
Given a a Future instance, retrieve an exc_info value suitable for passing
in as the exc_info parameter to logging.Logger.log() and related methods.
On Python 2, this will be a (type, value, traceback) triple.
On Python 3, this will be an exception instance (with embedded traceback).
If there was no exception, None is returned on both versions of Python.
"""
if six.PY3:
return future.exception()
else:
ex, tb = future.exception_info()
if ex is None:
return None
return type(ex), ex, tb