Write all python source code to a file

import os

from tqdm import tqdm


SUPPORTED_FORMATS = ['py']
directory = './src'
output_file = 'out.txt'


file_paths = [
    os.path.join(dirpath, file) for (dirpath, subdirs, files) in os.walk(directory) for file in files
    if file.rsplit('.', 1)[-1].lower() in SUPPORTED_FORMATS
]


for file_path in tqdm(file_paths, position=0):
    with open(file_path) as f:
        file_data = f.read()
    with open(output_file, 'a') as f:
        f.write(f'\n{file_path}\n' + file_data)