os.listdir() will show everything in the directory including files and directories. Docs here

If you want files only, you could either filter this down using os.path Docs here:

from os import listdir
from os.path import isfile, join
onlyfiles = [f for f in listdir(mypath) if isfile(join(mypath, f))]

or you could use os.walk() (Docs here) which gives a list of directories and files separately. If you only want the top directory you can just break the first time it yields

from os import walk

found_files = []
for (dirpath, dirnames, filenames) in walk(mypath):
    found_files.extend(filenames)
    break

If you want to put the files in a list you can use .extend() Docs Here

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