In video number 19 of the Coding in Python series, we continue working with the OS module.

Commands Used in this Video

Using the OS module to check if a file exists

#!/usr/bin/env python3


import os

file = "myfile.txt"

if os.path.isfile(file):
    print("The file exists.")
else:
    print("The file does not exist.")

Checking the existence of a user-designated file

#!/usr/bin/env python3


import os

file = input("Enter a file name: ")

if os.path.isfile(file):
    print("The file exists.")
else:
    print("The file does not exist.")

Checking for the existance of a file, and creating it if it does not exist

#!/usr/bin/env python3


import os

file = input("Enter a file name: ")

if os.path.isfile(file):
    print("The file exists.")
else:
    print("The file does not exist.")
    print("Creating it...")
    os.system('touch {}'.format(file))