VACUUM sqlite in python3.6

vaccum.py

import sqlite3, os

def vacuum(db_name):
    print("Filesize of {} before vaccum is {:,d} bytes.".
          format(db_name, os.stat(db_name).st_size)
         )
    conn = sqlite3.connect(db_name)
    isolation = conn.isolation_level
    print(isolation)
    conn.isolation_level = None
    print('begin vacumming.....')
    conn.execute('VACUUM')
    conn.isolation_level = isolation
    print("Filesize of {} after vaccum is {:,d} bytes.".
          format(db_name, os.stat(db_name).st_size)
         )
    conn.close()