What if you have to call a noisy function that prints a lot but you can't modify it? Mute it with a context manager.

shut_stdout.py

# A context manager to shut down stdout
# Within this context, sys.stdout will be written into devnull.
# so, effectively it's muted. 
@contextlib.contextmanager
def shut_stdout():
    sys.stdout = open(os.devnull, 'w')
    yield
    sys.stdout = sys.__stdout__