Encrypt several files individually with GPG

batch_gpg.py

#!/bin/python3

'''
Encrypt several files individually with GPG.

NOTE: The script moves all original files to ./trash

Dependencies:
- gpg (GnuPG) 2.2.19
- libgcrypt 1.8.5
'''

import subprocess
import os
from getpass import getpass
import datetime

mode = input('Encrypt or decrypt? (e/d) ').lower().strip()
if mode not in ('e', 'd'):
    raise ValueError('Incorrect mode.')

DIR_PATH = input('Directory path: ')

passphrase = getpass('Passphrase:')

if mode == 'e':
    COMMAND = f'echo "{passphrase}" | gpg --batch --passphrase-fd 0 -c --no-symkey-cache --cipher-algo AES256'
else:
    COMMAND = f'echo "{passphrase}" | gpg --batch --passphrase-fd 0'

file_paths = [os.path.join(DIR_PATH, file_path)
              for file_path in os.listdir(DIR_PATH)]

date_str = datetime.datetime.now().strftime(r'%Y-%m-%d_%Hh%Mm%Ss')
for i, path in enumerate(file_paths):
    subprocess.run(f'{COMMAND} {path}', check=True, shell=True)
    if i == 0:
        subprocess.run(f'mkdir -p trash/{date_str}', check=True, shell=True)
    subprocess.run(f'mv {path} trash/{date_str}/', check=True, shell=True)

gpg (GnuPG) 2.2.19
libgcrypt 1.8.5