* **Robust**: Get production-ready code. With automatic interactive documentation.
* **Robust**: Get production-ready code. With automatic interactive documentation.
* **Standards-based**: Based on (and fully compatible with) the open standards for APIs: <ahref="https://github.com/OAI/OpenAPI-Specification"class="external-link"target="_blank">OpenAPI</a> (previously known as Swagger) and <ahref="https://json-schema.org/"class="external-link"target="_blank">JSON Schema</a>.
* **Standards-based**: Based on (and fully compatible with) the open standards for APIs: <ahref="https://github.com/OAI/OpenAPI-Specification"class="external-link"target="_blank">OpenAPI</a> (previously known as Swagger) and <ahref="https://json-schema.org/"class="external-link"target="_blank">JSON Schema</a>.
<small>* estimation based on tests on an internal development team, building production applications.</small>
<small>* estimation based on tests conducted by an internal development team, building production applications.</small>
## Sponsors
## Sponsors
@ -61,6 +61,7 @@ The key features are:
<ahref="https://subtotal.com/?utm_source=fastapi&utm_medium=sponsorship&utm_campaign=open-source"target="_blank"title="The Gold Standard in Retail Account Linking"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/subtotal.svg"></a>
<ahref="https://subtotal.com/?utm_source=fastapi&utm_medium=sponsorship&utm_campaign=open-source"target="_blank"title="The Gold Standard in Retail Account Linking"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/subtotal.svg"></a>
<ahref="https://docs.railway.com/guides/fastapi?utm_medium=integration&utm_source=docs&utm_campaign=fastapi"target="_blank"title="Deploy enterprise applications at startup speed"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/railway.png"></a>
<ahref="https://docs.railway.com/guides/fastapi?utm_medium=integration&utm_source=docs&utm_campaign=fastapi"target="_blank"title="Deploy enterprise applications at startup speed"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/railway.png"></a>
<ahref="https://serpapi.com/?utm_source=fastapi_website"target="_blank"title="SerpApi: Web Search API"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/serpapi.png"></a>
<ahref="https://serpapi.com/?utm_source=fastapi_website"target="_blank"title="SerpApi: Web Search API"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/serpapi.png"></a>
<ahref="https://www.greptile.com/?utm_source=fastapi&utm_medium=sponsorship&utm_campaign=fastapi_sponsor_page"target="_blank"title="Greptile: The AI Code Reviewer"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/greptile.png"></a>
<ahref="https://databento.com/?utm_source=fastapi&utm_medium=sponsor&utm_content=display"target="_blank"title="Pay as you go for market data"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/databento.svg"></a>
<ahref="https://databento.com/?utm_source=fastapi&utm_medium=sponsor&utm_content=display"target="_blank"title="Pay as you go for market data"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/databento.svg"></a>
<ahref="https://speakeasy.com/editor?utm_source=fastapi+repo&utm_medium=github+sponsorship"target="_blank"title="SDKs for your API | Speakeasy"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/speakeasy.png"></a>
<ahref="https://speakeasy.com/editor?utm_source=fastapi+repo&utm_medium=github+sponsorship"target="_blank"title="SDKs for your API | Speakeasy"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/speakeasy.png"></a>
<ahref="https://www.svix.com/"target="_blank"title="Svix - Webhooks as a service"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/svix.svg"></a>
<ahref="https://www.svix.com/"target="_blank"title="Svix - Webhooks as a service"><imgsrc="https://fastapi.tiangolo.com/img/sponsors/svix.svg"></a>
* **Robust**: Get production-ready code. With automatic interactive documentation.
* **Robust**: Get production-ready code. With automatic interactive documentation.
* **Standards-based**: Based on (and fully compatible with) the open standards for APIs: <ahref="https://github.com/OAI/OpenAPI-Specification"class="external-link"target="_blank">OpenAPI</a> (previously known as Swagger) and <ahref="https://json-schema.org/"class="external-link"target="_blank">JSON Schema</a>.
* **Standards-based**: Based on (and fully compatible with) the open standards for APIs: <ahref="https://github.com/OAI/OpenAPI-Specification"class="external-link"target="_blank">OpenAPI</a> (previously known as Swagger) and <ahref="https://json-schema.org/"class="external-link"target="_blank">JSON Schema</a>.
<small>* estimation based on tests on an internal development team, building production applications.</small>
<small>* estimation based on tests conducted by an internal development team, building production applications.</small>
* 🐛 Fix Query\Header\Cookie parameter model alias. PR [#14360](https://github.com/fastapi/fastapi/pull/14360) by [@YuriiMotov](https://github.com/YuriiMotov).
* 🐛 Fix optional sequence handling in `serialize sequence value` with Pydantic V2. PR [#14297](https://github.com/fastapi/fastapi/pull/14297) by [@YuriiMotov](https://github.com/YuriiMotov).
## 0.123.2
### Fixes
* 🐛 Fix unformatted `{type_}` in FastAPIError. PR [#14416](https://github.com/fastapi/fastapi/pull/14416) by [@Just-Helpful](https://github.com/Just-Helpful).
* 🐛 Fix parsing extra non-body parameter list. PR [#14356](https://github.com/fastapi/fastapi/pull/14356) by [@YuriiMotov](https://github.com/YuriiMotov).
* 🐛 Fix parsing extra `Form` parameter list. PR [#14303](https://github.com/fastapi/fastapi/pull/14303) by [@YuriiMotov](https://github.com/YuriiMotov).
* 🐛 Fix support for form values with empty strings interpreted as missing (`None` if that's the default), for compatibility with HTML forms. PR [#13537](https://github.com/fastapi/fastapi/pull/13537) by [@MarinPostma](https://github.com/MarinPostma).
### Docs
* 📝 Add tip on how to install `pip` in case of `No module named pip` error in `virtual-environments.md`. PR [#14211](https://github.com/fastapi/fastapi/pull/14211) by [@zadevhub](https://github.com/zadevhub).
* 📝 Update Primary Key notes for the SQL databases tutorial to avoid confusion. PR [#14120](https://github.com/fastapi/fastapi/pull/14120) by [@FlaviusRaducu](https://github.com/FlaviusRaducu).
* 📝 Clarify estimation note in documentation. PR [#14070](https://github.com/fastapi/fastapi/pull/14070) by [@SaisakthiM](https://github.com/SaisakthiM).
## 0.123.1
### Fixes
* 🐛 Avoid accessing non-existing "$ref" key for Pydantic v2 compat remapping. PR [#14361](https://github.com/fastapi/fastapi/pull/14361) by [@svlandeg](https://github.com/svlandeg).
* 🐛 Fix `TypeError` when encoding a decimal with a `NaN` or `Infinity` value. PR [#12935](https://github.com/fastapi/fastapi/pull/12935) by [@kentwelcome](https://github.com/kentwelcome).
### Internal
* 🐛 Fix Windows UnicodeEncodeError in CLI test. PR [#14295](https://github.com/fastapi/fastapi/pull/14295) by [@hemanth-thirthahalli](https://github.com/hemanth-thirthahalli).
* 🔧 Update sponsors: add Greptile. PR [#14429](https://github.com/fastapi/fastapi/pull/14429) by [@tiangolo](https://github.com/tiangolo).
* ⬆ Bump markdown-include-variants from 0.0.6 to 0.0.7. PR [#14423](https://github.com/fastapi/fastapi/pull/14423) by [@YuriiMotov](https://github.com/YuriiMotov).
* 👥 Update FastAPI People - Sponsors. PR [#14422](https://github.com/fastapi/fastapi/pull/14422) by [@tiangolo](https://github.com/tiangolo).
* 👥 Update FastAPI People - Contributors and Translators. PR [#14420](https://github.com/fastapi/fastapi/pull/14420) by [@tiangolo](https://github.com/tiangolo).
## 0.123.0
### Fixes
* 🐛 Cache dependencies that don't use scopes and don't have sub-dependencies with scopes. PR [#14419](https://github.com/fastapi/fastapi/pull/14419) by [@tiangolo](https://github.com/tiangolo).
* 💅 Update CSS to explicitly use emoji font. PR [#14415](https://github.com/fastapi/fastapi/pull/14415) by [@tiangolo](https://github.com/tiangolo).
### Internal
* ⬆ Bump markdown-include-variants from 0.0.5 to 0.0.6. PR [#14418](https://github.com/fastapi/fastapi/pull/14418) by [@YuriiMotov](https://github.com/YuriiMotov).
* `Field(primary_key=True)` tells SQLModel that the `id` is the **primary key** in the SQL database (you can learn more about SQL primary keys in the SQLModel docs).
* `Field(primary_key=True)` tells SQLModel that the `id` is the **primary key** in the SQL database (you can learn more about SQL primary keys in the SQLModel docs).
By having the type as `int | None`, SQLModel will know that this column should be an `INTEGER` in the SQL database and that it should be `NULLABLE`.
**Note:** We use `int | None` for the primary key field so that in Python code we can *create an object without an `id`* (`id=None`), assuming the database will *generate it when saving*. SQLModel understands that the database will provide the `id` and *defines the column as a non-null `INTEGER`* in the database schema. See <ahref="https://sqlmodel.tiangolo.com/tutorial/create-db-and-table/#primary-key-id"class="external-link"target="_blank">SQLModel docs on primary keys</a> for details.
* `Field(index=True)` tells SQLModel that it should create a **SQL index** for this column, that would allow faster lookups in the database when reading data filtered by this column.
* `Field(index=True)` tells SQLModel that it should create a **SQL index** for this column, that would allow faster lookups in the database when reading data filtered by this column.
Sometimes, you might get a **`No module named pip`** error when trying to upgrade pip.
If this happens, install and upgrade pip using the command below:
<divclass="termy">
```console
$ python -m ensurepip --upgrade
---> 100%
```
</div>
This command will install pip if it is not already installed and also ensures that the installed version of pip is at least as recent as the one available in `ensurepip`.
///
## Add `.gitignore` { #add-gitignore }
## Add `.gitignore` { #add-gitignore }
If you are using **Git** (you should), add a `.gitignore` file to exclude everything in your `.venv` from Git.
If you are using **Git** (you should), add a `.gitignore` file to exclude everything in your `.venv` from Git.
<atitle="Greptile: The AI Code Reviewer"style="display: block; position: relative;"href="https://www.greptile.com/?utm_source=fastapi&utm_medium=sponsorship&utm_campaign=fastapi_sponsor_page"target="_blank">