Question

I have a faulty third party python module that is outputing to stdout or stderr while it is imported and this is breaking the output of my unittests.

How can I temporary redirect the stdout in order to hide its output.

Limit to Python 2.5 syntax 🙂

Update, I forgot to mention that sys.stdout and sys.__stderr__ methods do not work in this case. As far as I know this faulty module is using native code.

Answer 1

You can do it something like this:

>>> import sys, os
>>> _stderr = sys.stderr
>>> _stdout = sys.stdout
>>> null = open(os.devnull,'wb')
>>> sys.stdout = sys.stderr = null
>>> print("Bleh")
>>> sys.stderr = _stderr
>>> sys.stdout = _stdout
>>> print("Bleh")
Bleh