cpython - Python: where is the method listdir because there is no "def listdir()" in module os.py? -


python: wonder method listdir because not in module os.py. in module there no method:

def listdir ()

the listdir method implemented in c module, , imported dynamically depending on operating system environment. can see imports near top of os.py, in blocks :

if 'posix' in _names:     name = 'posix'     linesep = '\n'     posix import *

then file posixmodule.c in python source has posix implementation of listdir : https://github.com/python-git/python/blob/master/modules/posixmodule.c#l2068 (and likewise other oses).


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