# 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>>> import os
>>> filename, file_extension = os.path.splitext('/path/to/somefile.ext')
>>> filename
'/path/to/somefile'
>>> file_extension
'.ext'import os.path
extension = os.path.splitext(filename)[1]import pathlib
print(pathlib.Path('yourPath.example').suffix) # '.example'
#or
import os
filename, file_extension = os.path.splitext('/path/to/somefile.ext').py or .pyt