## Install `passlib`

PassLib is a great Python package to handle password hashes.

It supports many secure hashing algorithms and utilities to work with them.

The recommended algorithm is "Bcrypt".

Make sure you create a [virtual environment](../../virtual-environments.md){.internal-link target=_blank}, activate it, and then install PassLib with Bcrypt:

<div class="termy">

```console

pytest >=7.1.3,<9.0.0
coverage[toml] >= 6.5.0,< 8.0
mypy ==1.8.0
dirty-equals ==0.6.0
sqlmodel==0.0.22
flask >=1.1.2,<4.0.0
anyio[trio] >=3.2.1,<4.0.0
PyJWT==2.8.0
pyyaml >=5.3.1,<7.0.0
passlib[bcrypt] >=1.7.2,<2.0.0
inline-snapshot==0.13.0
# types
types-ujson ==5.7.0.1

* Configure any required permissions and roles using dependencies.
* Never store plaintext passwords, only password hashes.
* Implement and use well-known cryptographic tools, like Passlib and JWT tokens, etc.
* Add more granular permission controls with OAuth2 scopes where needed.
* ...etc.

]
xfail_strict = true
junit_family = "xunit2"
filterwarnings = [
    "error",
    'ignore:starlette.middleware.wsgi is deprecated and will be removed in a future release\..*:DeprecationWarning:starlette',
    # For passlib
    "ignore:'crypt' is deprecated and slated for removal in Python 3.13:DeprecationWarning",
    # see https://trio.readthedocs.io/en/stable/history.html#trio-0-22-0-2022-09-28

        `tf.keras.optimizer.Optimizer.apply_gradients`. This allows custom
        gradient aggregation and processing aggregated gradients in custom
        training loop.
    *   Allow `pathlib.Path` paths for loading models via Keras API.
*   `tf.function`/AutoGraph:
    *   AutoGraph is now available in `ReplicaContext.merge_call`,
        `Strategy.extended.update` and `Strategy.extended.update_non_slot`.

* Temporary fix to Netlify previews not deployable from PRs from forks. PR [#1046](https://github.com/tiangolo/fastapi/pull/1046) by [@mariacamilagl](https://github.com/mariacamilagl).

## 0.49.0

* Fix encoding of `pathlib` paths in `jsonable_encoder`. PR [#978](https://github.com/tiangolo/fastapi/pull/978) by [@patrickmckenna](https://github.com/patrickmckenna).