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04e2745136
Also, fixed up the annotations for tornadoviews to better align with how narrows was defined as `Iterable[Sequence[str]]` rather than `List[Tuple[str, str]]`.
24 lines
692 B
Python
24 lines
692 B
Python
from __future__ import absolute_import
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from django.conf import settings
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import hashlib
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import base64
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from typing import Optional
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from six import text_type
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def initial_password(email):
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# type: (text_type) -> Optional[text_type]
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"""Given an email address, returns the initial password for that account, as
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created by populate_db."""
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if settings.INITIAL_PASSWORD_SALT is not None:
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encoded_key = (settings.INITIAL_PASSWORD_SALT + email).encode("utf-8")
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digest = hashlib.sha256(encoded_key).digest()
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return base64.b64encode(digest)[:16]
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else:
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# None as a password for a user tells Django to set an unusable password
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return None
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