Brett Cannon added the comment:
So Alex's point is valid: the examples in the unittest.mock.patch docs shows
how to do this
(http://docs.python.org/dev/py3k/library/unittest.mock.html#patch). So this
could be simplified to:
def redirect_stdout(replacement=None):
return unittest.mock.patch('sys.stdout', replacement if replacement is not
None else io.StringIO())
Now that being said, this is extremely common, so Nick's point of just going
ahead and providing the helper makes sense. But I wouldn't put it in contextlib
but instead in unittest.mock since it is mocking out sys.stdout.
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nosy: +brett.cannon
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