To create a directory, use the os.mkdir() function provided by the os standard library module:

import os

dirname = '/Users/flavio/test'

os.mkdir(dirname)

Creating a folder can raise an OSError exception, for example if the disk is full or the directory already exists, so we use a try block to catch it and gracefully handle the problem by printing an error message:

import os

dirname = '/Users/flavio/test'

try:
    os.mkdir(dirname)
except OSError:
    print('Failed creating the directory')
else:
    print('Directory created')

Lessons in this unit:

0:	Introduction
1:	Check if file or directory exists
2:	Create an empty file
3:	▶︎ Create a directory
4:	Read the content of a file
5:	Write to a file
6:	List files in a directory
7:	Get the details of a file
8:	The with statement