Use `contextlib.redirect_stdout`

[delirious-lettuce]

https://docs.python.org/3/library/contextlib.html#contextlib.redirect_stdout

>>> from contextlib import contextmanager, redirect_stdout
>>> @contextmanager
... def suppress_stdout():
...     with open(os.devnull, "w") as devnull:
...         old_stdout = sys.stdout
...         sys.stdout = devnull
...         try:
...             yield
...         finally:
...             sys.stdout = old_stdout
... 
>>> with suppress_stdout():
...     print('TEST')
... 
>>> @contextmanager
... def suppress_stdout():
...     with open(os.devnull, "w") as devnull:
...         with redirect_stdout(devnull):
...             yield
... 
>>> with suppress_stdout():
...     print('TEST')
...