Generate .env (python)

import secrets
from pathlib import Path

CWD = Path.cwd()
ENV_FILE = CWD / '.env'
if ENV_FILE.exists():
    ENV_FILE = CWD / 'generated.env'


def error():
    raise ValueError('This field is required!')


registry = input('registry: ') or error()
bot_token = input('tg bot token: ') or error()
jwt_key = input('jwt key [generated]: ') or secrets.token_hex(32)
admin_chat_id = int(input('admin chat id: ') or error())
service_chat_id = int(input('service chat id: ') or error())
pay_public = input('cloudpayments public key: ') or error()
pay_api_key = input('cloudpayments secret key: ') or error()
domain = input('domain: ') or error()
nginx_port = int(input('nginx port [80]: ') or 80)
backend_port = int(input('backend port [5000]: ') or 5000)
frontend_port = int(input('frontend port [3000]: ') or 3000)
timezone = input('default time zone: ') or error()
postgres_user = input('db user [user]: ') or 'user'
postgres_password = input('db password [generated]: ') or secrets.token_hex(16)
postgres_db = input('db name [postgres]: ') or 'postgres'
postgres_port = int(input('db port [5432]: ') or 5432)

ENV_FILE.write_text('\n'.join((
    f'REGISTRY={registry}',
    f'BOT_TOKEN={bot_token}',
    f'JWT_KEY={jwt_key}',
    f'ADMIN_CHAT_ID={admin_chat_id}',
    f'SERVICE_CHAT_ID={service_chat_id}',
    f'PAY_PUBLIC={pay_public}',
    f'PAY_API_KEY={pay_api_key}',
    f'DOMAIN={domain}',
    f'NGINX_PORT={nginx_port}',
    f'BACKEND_PORT={backend_port}',
    f'FRONTEND_PORT={frontend_port}',
    f'TIMEZONE={timezone}',
    f'POSTGRES_USER={postgres_user}',
    f'POSTGRES_PASSWORD={postgres_password}',
    f'POSTGRES_DB={postgres_db}',
    f'POSTGRES_PORT={postgres_port}',
)))