{"foo", "ba", "9 foo=ba\n", true},
		{"foo", "bar", "11 foo=bar\n", true},
		{"foo", "b=\nar=\n==\x00", "18 foo=b=\nar=\n==\x00\n", true},
		{"foo", "hello9 foo=ba\nworld", "27 foo=hello9 foo=ba\nworld\n", true},
		{"☺☻☹", "日a本b語ç", "27 ☺☻☹=日a本b語ç\n", true},
		{"xhello", "\x00world", "17 xhello=\x00world\n", true},
		{"path", "null\x00", "", false},
		{"null\x00", "value", "", false},

[tf-nightly-cpu](https://pypi.python.org/pypi/tf-nightly-cpu) packages on PyPI.*

#### *Try your first TensorFlow program*

```shell
$ python
```

```python
>>> import tensorflow as tf
>>> tf.add(1, 2).numpy()
3
>>> hello = tf.constant('Hello, TensorFlow!')
>>> hello.numpy()
b'Hello, TensorFlow!'
```

For more examples, see the
[TensorFlow Tutorials](https://www.tensorflow.org/tutorials/).

Examples:

    Source (English):

        «««
        "Hello world"
        “Hello Universe”
        "He said: 'Hello'"
        “my name is ‘Nils’”
        `"__main__"`
        `"items"`
        »»»

    Result (German):

        «««
        „Hallo Welt“
        „Hallo Universum“
        „Er sagte: ‚Hallo‘“
        „Mein Name ist ‚Nils‘“
        `"__main__"`
        `"items"`

$ $Env:MY_NAME = "Wade Wilson"

// 与其他程序一起使用它，例如
$ echo "Hello $Env:MY_NAME"

Hello Wade Wilson
```

</div>

////

### 在 Python 中读取环境变量

您还可以在 Python 之外的地方（例如终端中或使用任何其他方法）创建环境变量，然后在 Python 中读取它们。

例如，您可以有一个名为 `main.py` 的文件，其中包含以下内容：

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip

        //// tab | Python 3.8+ non-Annotated
        Hello
        ////
        »»»

    Result (German):

        «««
        //// tab | Python 3.8+ nicht annotiert
        Hallo
        ////
        »»»

    Source (English) – Here there is nothing to translate in the tab title:

        «««
        //// tab | Linux, macOS, Windows Bash
        Hello again
        ////
        »»»

			[]byte("foo"),
		}, {
			&Header{Name: "world", Mode: 0640, Size: int64(5)},
			[]byte("hello"),
		}},
	}, {
		"GNU",
		[]file{{
			&Header{Name: "bar", Mode: 0640, Size: int64(3), Devmajor: -1},
			[]byte("foo"),
		}, {
			&Header{Name: "world", Mode: 0640, Size: int64(5), Devmajor: -1},
			[]byte("hello"),
		}},
	}, {
		"PAX",
		[]file{{

## Überschriften { #headings }

//// tab | Test

### Eine Webapp entwickeln – ein Tutorial { #develop-a-webapp-a-tutorial }

Hallo.

### Typhinweise und -annotationen { #type-hints-and-annotations }

Hallo wieder.

### Super- und Subklassen { #super-and-subclasses }

Hallo wieder.

////

//// tab | Info

    ["/optional-list-str", "/model-optional-list-str"],
)
def test_optional_list_str(path: str):
    client = TestClient(app)
    response = client.post(path, data={"p": ["hello", "world"]})
    assert response.status_code == 200
    assert response.json() == {"p": ["hello", "world"]}


# =====================================================================================
# Alias

@pytest.mark.parametrize(
    "path",
    ["/required-str", "/model-required-str"],
)
def test_required_str(path: str):
    client = TestClient(app)
    response = client.get(f"{path}?p=hello")
    assert response.status_code == 200
    assert response.json() == {"p": "hello"}


# =====================================================================================
# Alias


@app.get("/required-alias")

    "path",
    ["/required-str", "/model-required-str"],
)
def test_required_str(path: str):
    client = TestClient(app)
    response = client.post(path, data={"p": "hello"})
    assert response.status_code == 200
    assert response.json() == {"p": "hello"}


# =====================================================================================
# Alias


@app.post("/required-alias", operation_id="required_alias")