Python: How can I find all files with a particular extension?

Question

I am trying to find all the .c files in a directory using Python.

I wrote this, but it is just returning me all files - not just .c files.

Answer 1

this is pretty clean. the commands come from the os library. this code will search through the current working directory and list only the specified file type. You can change this by replacing 'os.getcwd()' with your target directory and choose the file type by replacing '(ext)'. os.fsdecode is so you don't get a bytewise error from .endswith(). this also sorts alphabetically, you can remove sorted() for the raw list.

    import os
    filenames = sorted([os.fsdecode(file) for file in os.listdir(os.getcwd()) if os.fsdecode(file).endswith(".(ext)")])