python-dependency-injector/examples/providers/callable_injections.py

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Python

"""`Callable` providers example."""
from passlib.hash import sha256_crypt
from objects.providers import Callable
from objects.injections import KwArg
# Password hasher and verifier providers (hash function could be changed
# anytime (for example, to sha512) without any changes in client's code):
password_hasher = Callable(sha256_crypt.encrypt,
KwArg('salt_size', 16),
KwArg('rounds', 10000))
password_verifier = Callable(sha256_crypt.verify)
# Making some asserts (client's code):
hashed_password = password_hasher('super secret')
assert password_verifier('super secret', hashed_password)