一句话:使用os.makedirs(path)
import errno
import os
def mkdir_p(path):
try:
os.makedirs(path)
except OSError as exc: # Python >2.5
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else:
raise
https://stackoverflow.com/questions/600268/mkdir-p-functionality-in-python