How to filter files (with known type) from os.walk?

Question

I have list from os.walk. But I want to exclude some directories and files. I know how to do it with directories:

for root, dirs, files in os.wa         


        

Answer 1

And in one more way, because I just wrote this, and then stumbled upon this question:

files = filter(lambda file: not file.endswith('.txt'), files)