What is the difference between `os.path.exists()` and `os.path.isfile()`?

• os.path.exists(path): Returns True if either a directory or a file exists at the path.
• os.path.isfile(path): Returns True only if a regular file exists at that path (returns False if the path points to a directory).

import os

os.path.exists("/var/log")   # True (it is a directory)
os.path.isfile("/var/log")   # False (it is not a file)