Python - reset stdout to normal, after previously redirecting it to a file

问题

At the beginning of my python program I have the following line:

sys.stdout = open('stdout_file', 'w')

Halfway through my program I would like to set stdout back to the normal stdout. How do I do this?

回答1:

The original stdout can be accessed as sys.__stdout__. This is documented.

回答2:

The same holds for stderr, of course. At the end, these lines are needed to get the original streams.

sys.stdout = sys.__stdout__
sys.stderr = sys.__stderr__

回答3:

Another common practice is to store the default stdout and / or stdin and then return them once you are finished with sending your output / input to custom streams. For instance:

orig_stdout = sys.stdout
sys.stdout = open('stdout_file', 'w')
sys.stdout = orig_stdout

来源：https://stackoverflow.com/questions/14245227/python-reset-stdout-to-normal-after-previously-redirecting-it-to-a-file