How to create a directory structure that does not exist

In Python, OS libraries are often used to operate files. How to create a directory structure that does not exist

Determine whether the directory exists. If it does not exist, create a new one:

import os
if not os.path.isdir(dir_name):
    os.makedirs(dir_name)

os.mkdir() creates the last-level directory in the path. If the previous directory does not exist and needs to be created, an error will be reported.

os.makedirs() creates multi-level directories. If the intermediate directories do not exist, they will be created automatically.

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