您可以使用os.listdir和os.path函数将其写得很简单：
import os
basedir = 'C:/Test'
for fn in os.listdir(basedir):
if not os.path.isdir(os.path.join(basedir, fn)):
continue # Not a directory
if ',' in fn:
continue # Already in the correct form
if ' ' not in fn:
continue # Invalid format
firstname,_,surname = fn.rpartition(' ')
os.rename(os.path.join(basedir, fn),
os.path.join(basedir, surname + ', ' + firstname))
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