check file format python code example

Example 1: python check file extension

# Checking for single extension (.txt) of file
if file.endswith(".txt"):
  # do something
  
# Checking multiple extensions (.txt, .pdf, .mp3, ...)
if file.endswith((".txt", ".pdf", ".mp3")):
  # do something

Example 2: python check file format

# Assuming m is a string, you can use endswith:
if m.endswith('.mp3'):
...
elif m.endswith('.flac'):
...