Mais même si vous n'utilisez pas ou n'utiliserez jamais **FastAPI**, vous pourriez bénéficier d'apprendre quelques choses sur ces dernières.

!!! note
    Si vous êtes un expert Python, et que vous savez déjà **tout** sur les annotations de type, passez au chapitre suivant.

## Motivations

Prenons un exemple simple :

```Python
{!../../../docs_src/python_types/tutorial001.py!}
```

### Internal

pkg image/gif, type Options struct, Drawer draw.Drawer
pkg image/gif, type Options struct, NumColors int
pkg image/gif, type Options struct, Quantizer draw.Quantizer
pkg log/syslog (freebsd-386-cgo), const LOG_ALERT Priority
pkg log/syslog (freebsd-386-cgo), const LOG_AUTH Priority
pkg log/syslog (freebsd-386-cgo), const LOG_AUTHPRIV Priority
pkg log/syslog (freebsd-386-cgo), const LOG_CRIT Priority

![editor support](https://fastapi.tiangolo.com/img/vscode-completion.png)

For a more complete example including more features, see the <a href="https://fastapi.tiangolo.com/tutorial/">Tutorial - User Guide</a>.

**Spoiler alert**: the tutorial - user guide includes:

* Declaration of **parameters** from other different places as: **headers**, **cookies**, **form fields** and **files**.

eurovision

// eus : 2013-12-12 Puntueus Fundazioa
eus

// events : 2013-12-05 Binky Moon, LLC
events

// exchange : 2014-03-06 Binky Moon, LLC
exchange

// expert : 2013-11-21 Binky Moon, LLC
expert

// exposed : 2013-12-05 Binky Moon, LLC
exposed

// express : 2015-02-11 Binky Moon, LLC
express

// extraspace : 2015-05-14 Extra Space Storage LLC
extraspace

config) {\n      this._config  = config\n\n      this._prepareContainer();\n\n      const initEvent = $.Event(Event.INIT)\n      $('body').trigger(initEvent)\n    }\n\n    // Public\n\n    create() {\n      var toast = $('<div class=\"toast\" role=\"alert\" aria-live=\"assertive\" aria-atomic=\"true\"/>')\n\n      toast.data('autohide', this._config.autohide)\n      toast.data('animation', this._config.fade)\n      \n      if (this._config.class) {\n        toast.addClass(this._config.class)\n     ...

pkg time, method (Time) Compare(Time) int #50770
pkg unicode/utf16, func AppendRune([]uint16, int32) []uint16 #51896
# freebsd riscv64 port
pkg log/syslog (freebsd-riscv64), const LOG_ALERT = 1 #53466
pkg log/syslog (freebsd-riscv64), const LOG_ALERT Priority #53466
pkg log/syslog (freebsd-riscv64), const LOG_AUTH = 32 #53466
pkg log/syslog (freebsd-riscv64), const LOG_AUTH Priority #53466

    * sync time.
 
    * The goal is for administrators to be able to alert on proxies that, for
    * whatever reason, are quite stale.