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Python Python for File Systems Navigation Dir Contents

Posted by leakedmemory
leakedmemory
12,178 Points

Do I Not Understand the Problem Statement?

  1. Read all the files names in a directory.
  2. Test that all the provided file names are in that directory.

So, I get a list of files in the directory and then make sure each file name is in that list.

I wonder what I'm missing here. I also tried using os.walk to get all files in all sub-directories.

Thanks for any help!

contents.py 
import os

def dir_contains(path, file_names):

    files = [f.name for f in os.scandir(path) if f.is_file()]
    for f in file_names:
        if f not in files:
            retun False

    return True

1 Answer

leakedmemory
leakedmemory
12,178 Points

Edited code passes: I didn't type the return keyword correctly. 

import os

def dir_contains(path, file_names):
    if not os.path.exists(path):
        return False

    if not os.path.isdir(path):
        return False

    files = [f.name for f in os.scandir(path) if f.is_file()]
    for f in file_names:
        if f not in files:
            return False

    return True