List all files in the folder in Python 3, recursion is an option

walk.py

import os

if __name__ == '__main__':
    def walk_dir(current_path, recursive=True):
        result = []
        for (parent_path, folder_names, file_names) in os.walk(current_path):
            # I don't like -> \ <-
            parent_path = parent_path.replace('\\', '/')

            if not recursive:
                break

            for file_name in file_names:
                current_result = f'{parent_path}/{file_name}'
                result.append(current_result)

        return result


    result = walk_dir(r'/path/to/folder')
    for file in result:
        print(file)