How to check if a file exists?

[nick john]

I don't want to create the file if it dosen't exist I just want to see if it's there. Like have a variable return True if it is in fact there.
Thanks,
Nick

[bvdet]

All you need is a path and function call from the os module.

import os
path = "X:/subdir/file_name"
os.path.isfile(path)