def get_full_name(first_name, last_name):
    full_name = first_name.title() + " " + last_name.title()
    return full_name

def get_full_name(first_name: str, last_name: str):
    full_name = first_name.title() + " " + last_name.title()
    return full_name

Вы вводите первый параметр функции, `first_name`, затем точку (`.`) и нажимаете `Ctrl+Space`, чтобы вызвать автозавершение.

Но, к сожалению, ничего полезного не находится:

<img src="/img/python-types/image01.png">

### Добавим типы { #add-types }

Давайте изменим одну строку из предыдущей версии.

Мы поменяем ровно этот фрагмент — параметры функции — с:

```Python
    first_name, last_name
```

на:

```Python
    first_name, last_name
```

zu:

```Python
    first_name: str, last_name: str
```

Das war's.

Das sind die „Typhinweise“:

{* ../../docs_src/python_types/tutorial002_py39.py hl[1] *}

Das ist nicht das gleiche wie das Deklarieren von Defaultwerten, wie es hier der Fall ist:

```Python
    first_name="john", last_name="doe"
```

```Python
    first_name, last_name
```

para:

```Python
    first_name: str, last_name: str
```

É isso aí.

Esses são os "type hints":

{* ../../docs_src/python_types/tutorial002_py39.py hl[1] *}

Isso não é o mesmo que declarar valores padrão como seria com:

```Python
    first_name="john", last_name="doe"
```

É uma coisa diferente.

```Python
    first_name, last_name
```

a:

```Python
    first_name: str, last_name: str
```

Eso es todo.

Esas son las "anotaciones de tipos":

{* ../../docs_src/python_types/tutorial002_py39.py hl[1] *}

Eso no es lo mismo que declarar valores predeterminados como sería con:

```Python
    first_name="john", last_name="doe"
```

Es una cosa diferente.

```Python
    first_name, last_name
```

to:

```Python
    first_name: str, last_name: str
```

That's it.

Those are the "type hints":

{* ../../docs_src/python_types/tutorial002_py39.py hl[1] *}

That is not the same as declaring default values like would be with:

```Python
    first_name="john", last_name="doe"
```

It's a different thing.

然后你尝试向程序员老手的朋友——编辑器自动补全寻求帮助。

输入函数的第一个参数 `first_name`，输入点号（`.`）然后敲下 `Ctrl+Space` 来触发代码补全。

但遗憾的是并没有起什么作用：

<img src="https://fastapi.tiangolo.com/img/python-types/image01.png">

### 添加类型

让我们来修改上面例子的一行代码。

我们将把下面这段代码中的函数参数从：

```Python
    first_name, last_name
```

改成：

```Python
    first_name: str, last_name: str
```

就是这样。

这些就是"类型提示"：

        when(mockAddress.firstCalledName()).thenReturn(expectedFirstName);

        // When
        String firstName = mockAddress.firstCalledName();

        // Then
        assertEquals(expectedFirstName, firstName, "Should return first called name");
        assertNotNull(firstName, "First called name should not be null");
    }

    @Test

    # TODO: In that case, define if File() should support example/examples too
    # @app.post("/form_example")
    # def form_example(firstname: str = Form(example="John")):
    #     return firstname

    # @app.post("/form_examples")
    # def form_examples(
    #     lastname: str = Form(
    #         ...,
    #         examples={