## Без Pydantic

```Python hl_lines="4"
{!../../../docs_src/body/tutorial001.py!}
```

## Создание вашей собственной модели

После этого вы описываете вашу модель данных как класс, наследующий от `BaseModel`.

Используйте аннотации типов Python для всех атрибутов:

```Python hl_lines="7-11"
{!../../../docs_src/body/tutorial001.py!}
```

=== "Python 3.10+"

    ```Python hl_lines="18-20"
    {!> ../../../docs_src/body_multiple_params/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="18-20"
    {!> ../../../docs_src/body_multiple_params/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="19-21"
    {!> ../../../docs_src/body_multiple_params/tutorial001_an.py!}
    ```

=== "Python 3.10+ non-Annotated"

=== "Python 3.10+"

    ```Python hl_lines="12"
    {!> ../../../docs_src/body_nested_models/tutorial002_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="14"
    {!> ../../../docs_src/body_nested_models/tutorial002_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="14"
    {!> ../../../docs_src/body_nested_models/tutorial002.py!}
    ```

## Типы множеств

    {!> ../../../docs_src/body_nested_models/tutorial006_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/body_nested_models/tutorial006_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="20"
    {!> ../../../docs_src/body_nested_models/tutorial006.py!}
    ```

    val response2 = client.newCall(request).execute()
    response1.body.string() // Discard the response body.
    response2.body.string() // Discard the response body.
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(0)
    assertThat(server.takeRequest().sequenceNumber).isEqualTo(1)
  }

  @Test
  fun connectionsAreEvicted() {
    server.enqueue(MockResponse(body = "a"))
    server.enqueue(MockResponse(body = "b"))

    assertThat(body.boundary).isEqualTo("123")
    assertThat(body.type).isEqualTo(MultipartBody.MIXED)
    assertThat(body.contentType().toString())
      .isEqualTo("multipart/mixed; boundary=123")
    assertThat(body.parts.size).isEqualTo(1)
    assertThat(body.contentLength()).isEqualTo(33L)
    val buffer = Buffer()
    body.writeTo(buffer)
    assertThat(body.contentLength()).isEqualTo(buffer.size)

    assertThat(body.contentLength()).isEqualTo(3)
    assertThat(bodyToHex(body)).isEqualTo("616263")
    assertThat(bodyToHex(body), "Retransmit body").isEqualTo("616263")
  }

  @Test
  fun byteArrayRange() {
    val contentType = "text/plain".toMediaType()
    val body: RequestBody = ".abcd".toByteArray().toRequestBody(contentType, 1, 3)
    assertThat(body.contentType()).isEqualTo(contentType)

    return client


@needs_py39
def test_post_form_no_body(client: TestClient):
    response = client.post("/files/")
    assert response.status_code == 422, response.text
    assert response.json() == IsDict(
        {
            "detail": [
                {
                    "type": "missing",
                    "loc": ["body", "file"],
                    "msg": "Field required",

    if dependant.body_params:
        (
            body_values,
            body_errors,
        ) = await request_body_to_args(  # body_params checked above
            required_params=dependant.body_params, received_body=body
        )
        values.update(body_values)
        errors.extend(body_errors)
    if dependant.http_connection_param_name: