if statement to test whether the file exists before reading from it. code example

Example 1: python os if file exists

import os.path

if os.path.isfile('filename.txt'):
    print ("File exist")
else:
    print ("File not exist")

Example 2: file exist python

import os.path

if os.path.exists('filename.txt'):
    print ("File exist")
else:
    print ("File not exist")