from django.conf import settings import hashlib import base64 from typing import Optional def initial_password(email: str) -> Optional[str]: """Given an email address, returns the initial password for that account, as created by populate_db.""" if settings.INITIAL_PASSWORD_SALT is not None: encoded_key = (settings.INITIAL_PASSWORD_SALT + email).encode("utf-8") digest = hashlib.sha256(encoded_key).digest() return base64.b64encode(digest)[:16].decode('utf-8') else: # None as a password for a user tells Django to set an unusable password return None