You write standard Python with types:

```Python
from datetime import date

from pydantic import BaseModel

# Declare a variable as a str
# and get editor support inside the function
def main(user_id: str):
    return user_id


# A Pydantic model
class User(BaseModel):
    id: int
    name: str
    joined: date
```

Escribes Python estándar con tipos:

```Python
from datetime import date

from pydantic import BaseModel

# Declara una variable como un str
# y obtiene soporte del editor dentro de la función
def main(user_id: str):
    return user_id


# Un modelo de Pydantic
class User(BaseModel):
    id: int
    name: str
    joined: date

```Python
commons: Annotated[dict, Depends(common_parameters)]
```

Pero como estamos usando `Annotated`, podemos almacenar ese valor `Annotated` en una variable y usarlo en múltiples lugares:

{* ../../docs_src/dependencies/tutorial001_02_an_py310.py hl[12,16,21] *}

/// tip | Consejo

        lenient().when(tree.isConnected()).thenReturn(connected);
        lenient().when(tree.isSMB2()).thenReturn(smb2);
    }

    @Test
    @DisplayName("Constructor with null tree throws NPE (byte[] fid variant)")
    void constructor_nullTree_byteArray_throwsNPE() {
        lenient().when(cfg.isTraceResourceUsage()).thenReturn(false);
        assertThrows(NullPointerException.class,

如果你需要2分钟来学习如何使用 Python 类型（即使你不使用 FastAPI ），看看这个简短的教程：[Python Types](python-types.md){.internal-link target=_blank}。

编写带有类型标注的标准 Python：

```Python
from datetime import date

from pydantic import BaseModel

# Declare a variable as a str
# and get editor support inside the function
def main(user_id: str):
    return user_id


# A Pydantic model
class User(BaseModel):
    id: int
    name: str
    joined: date
```

在許多情況下，環境變數的用途和適用性可能不會立刻顯現。但是在開發過程中，它們會在許多不同的場景中出現，因此瞭解它們是非常必要的。

在许多情况下，环境变量的用途和适用性并不是很明显。但是在开发过程中，它们会在许多不同的场景中出现，因此了解它们是很有必要的。

        options.addOption(Option.builder()
                .longOpt(FORCE_INTERACTIVE)
                .desc(
                        "Run in interactive mode. Overrides, if applicable, the CI environment variable and --non-interactive/--batch-mode options")
                .build());
        options.addOption(Option.builder(SUPPRESS_SNAPSHOT_UPDATES)
                .longOpt("no-snapshot-updates")

   * response code is 407 proxy unauthorized, this returns the "Proxy-Authenticate" challenges.
   * Otherwise this returns an empty list of challenges.
   *
   * If a challenge uses the `token68` variant instead of auth params, there is exactly one
   * auth param in the challenge at key null. Invalid headers and challenges are ignored.
   * No semantic validation is done, for example that `Basic` auth must have a `realm`

            options.addOption(Option.builder()
                    .longOpt(FORCE_INTERACTIVE)
                    .desc(
                            "Run in interactive mode. Overrides, if applicable, the CI environment variable and --non-interactive/--batch-mode options")
                    .get());
            options.addOption(Option.builder(ALTERNATE_USER_SETTINGS)
                    .longOpt("settings")