After that, your file structure could look like:

```
.
├── app
│   ├── __init__.py
│   ├── main.py
└── static
    ├── redoc.standalone.js
    ├── swagger-ui-bundle.js
    └── swagger-ui.css
```

### Serve the static files

* Import `StaticFiles`.
* "Mount" a `StaticFiles()` instance in a specific path.

```Python hl_lines="7  11"

But if you use the same model as an output, like here:

=== "Python 3.10+"

    ```Python hl_lines="19"
    {!> ../../../docs_src/separate_openapi_schemas/tutorial001_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="21"
    {!> ../../../docs_src/separate_openapi_schemas/tutorial001_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="21"

=== "Python 3.10+"

    ```Python hl_lines="4  25"
    {!> ../../../docs_src/additional_status_codes/tutorial001_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="4  25"
    {!> ../../../docs_src/additional_status_codes/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="4  26"
    {!> ../../../docs_src/additional_status_codes/tutorial001_an.py!}

=== "Python 3.10+"

    ```Python hl_lines="1"
    {!> ../../../docs_src/python_types/tutorial009_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="1  4"
    {!> ../../../docs_src/python_types/tutorial009.py!}
    ```

=== "Python 3.8+ alternative"

    ```Python hl_lines="1  4"
    {!> ../../../docs_src/python_types/tutorial009b.py!}
    ```

## Import Pydantic's `BaseModel`

First, you need to import `BaseModel` from `pydantic`:

=== "Python 3.10+"

    ```Python hl_lines="2"
    {!> ../../../docs_src/body/tutorial001_py310.py!}
    ```

=== "Python 3.8+"

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

## Create your data model

=== "Python 3.10+"

    ```Python hl_lines="62-65"
    {!> ../../../docs_src/security/tutorial005_an_py310.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="62-65"
    {!> ../../../docs_src/security/tutorial005_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="63-66"
    {!> ../../../docs_src/security/tutorial005_an.py!}
    ```

=== "Python 3.9+"

    ```Python hl_lines="8"
    {!> ../../../docs_src/security/tutorial001_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python  hl_lines="7"
    {!> ../../../docs_src/security/tutorial001_an.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

    ```Python hl_lines="6"

      return lines.hasNext() ? lines.next() : null;
    }

    @Override
    public ImmutableList<String> readLines() {
      return ImmutableList.copyOf(linesIterator());
    }

    @Override
    @ParametricNullness
    public <T extends @Nullable Object> T readLines(LineProcessor<T> processor) throws IOException {
      Iterator<String> lines = linesIterator();
      while (lines.hasNext()) {

**FastAPI** will take that model, generate its JSON Schema and include it in the correct place in OpenAPI.

For example, to declare another response with a status code `404` and a Pydantic model `Message`, you can write:

```Python hl_lines="18  22"
{!../../../docs_src/additional_responses/tutorial001.py!}
```

!!! note

=== "Python 3.9+"

    ```Python hl_lines="12"
    {!> ../../../docs_src/dependencies/tutorial011_an_py39.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="11"
    {!> ../../../docs_src/dependencies/tutorial011_an.py!}
    ```

=== "Python 3.8+ non-Annotated"

    !!! tip
        Prefer to use the `Annotated` version if possible.

    ```Python hl_lines="10"