import os#Your path here e.g. "C:\Program Files\text.txt"#For access purposes: "C:\\Program Files\\text.txt"if os.path.exists("C:\..."): print "File found!"else: print "File not found!"
Importing os
makes it easier to navigate and perform standard actions with your operating system.
For reference also see How to check whether a file exists using Python?
If you need high-level operations, use shutil
.