why does sys.stdout = None work?

Question

i can silence and restore sys.stdout this way:

import sys
sys.stdout = None
print(\'hello\')  # does not write to stdout
sys.stdout = sys.__stdo         


        

Answer 1

print has an explicit check for None.

    /* sys.stdout may be None when FILE* stdout isn't connected */
    if (file == Py_None)
        Py_RETURN_NONE;