Create a folder and set user:group with Python's os module

gistfile1.py

import os
import pwd

file_path = '/tmp/example'
if not os.path.exists(file_path):
  os.makedirs(file_path) # creates with default perms 0777
  uid, gid =  pwd.getpwnam('root').pw_uid, pwd.getpwnam('www-data').pw_uid
  os.chown(file_path, uid, gid) # set user:group as root:www-data
  
# go check with ls -lah /tmp/example 

I think the second call to pwd.getpwnam should be .pw_gid not .pw_uid