Remove A Key From Frontmatter In Python

#!/usr/bin/env python3

import frontmatter
import glob
import os

from os.path import isfile

def clear_output_dir(output_dir):
    files_to_delete = [
        file for file in glob.glob(f"{output_dir}/*.txt" )
        if isfile(file)
    ]

    for file_to_delete in files_to_delete:
        os.remove(file_to_delete)

def make_files(input_dir, output_dir):
    files = [
        file for file in glob.glob(f"{input_dir}/*.txt")
        if isfile(file)
    ]

    for file in files:
        post = frontmatter.load(file) 

        if 'created' in post:
            post.metadata.pop('created')

            output_file = file.replace(input_dir, output_dir)
            with open(output_file, 'w') as _out:
                frontmatter.dump(post, output_file)

            # print(post['created'])






if __name__ == "__main__":
    input_dir  = '/Users/alans/workshop/site_content_ksuid_migration_data/04_status_updates'
    output_dir = '/Users/alans/workshop/site_content_ksuid_migration_data/05_clean_frontmatter'

    clear_output_dir(output_dir)
    make_files(input_dir, output_dir)