Isfile

Check if file is a file or directory:

import os
if os.path.isfile('./path/to/file.txt'):
    print("Is File")
if os.path.isdir("./path/to/dir/"):
    print("Is Directory")
if not os.path.exists('./test1/test2'):
    os.makedirs('./test1/test2')

Join

To create a path:

import os
path = os.path.join('root-dir', 'parent-dir', 'file.txt')

Makedirs

To make directories recursively:

import os
if not os.path.exists('./test1/test2'):
    os.makedirs('./test1/test2')

Alternatively:

from pathlib import Path
Path('./test3/test4').mkdir(parents=True, exist_ok=True)

Split

Split a file path into dir and file:

import os
head, tail = os.path.split('/path/to/file.txt')
print(head)  # '/path/to'
print(tail)  # 'file.txt'

Splitext

Get the extension from path

import os
path, ext = os.path.splitext('/path/to/file.tar.gz')
print(path)  # '/path/to/file.tar'
print(ext)   # '.gz'