}

[data-ty] {
    display: block;
    line-height: 2;
}

[data-ty]:before {
    /* Set up defaults and ensure empty lines are displayed. */
    content: '';
    display: inline-block;
    vertical-align: middle;
}

[data-ty="input"]:before,
[data-ty-prompt]:before {
    margin-right: 0.75em;
    color: var(--color-text-subtle);
}

[data-ty="input"]:before {
    content: '$';
}

}

th.halign-center,
td.halign-center {
	text-align: center;
}

th.valign-top,
td.valign-top {
	vertical-align: top;
}

th.valign-bottom,
td.valign-bottom {
	vertical-align: bottom;
}

th.valign-middle,
td.valign-middle {
	vertical-align: middle;
}

table thead th,
table tfoot th {
	font-weight: bold;
}

tbody tr th {

          {% include ".icons/material/email.svg" %}
        </span> Subscribe to the <strong>FastAPI and friends</strong> newsletter 🎉
      </a>
    </div>
    <div class="item">

dotted}b,strong{font-weight:inherit}b,strong{font-weight:bolder}code,kbd,samp{font-family:monospace,monospace;font-size:1em}dfn{font-style:italic}mark{background-color:#ff0;color:#000}small{font-size:80%}sub,sup{font-size:75%;line-height:0;position:relative;vertical-align:baseline}sub{bottom:-.25em}sup{top:-.5em}audio,video{display:inline-block}audio:not([controls]){display:none;height:0}img{border-style:none}svg:not(:root){overflow:hidden}button,input,optgroup,select,textarea{font-family:sans-serif;font-si...

		doneCh: make(chan struct{}),
	}
}

//	 This test exercises the graceful termination scenario
//	 described in the following diagram
//	   - every vertical line is an independent timeline
//	   - the leftmost vertical line represents the go routine that
//	     is executing GenericAPIServer.Run method
//	   - (signal name) indicates that the given lifecycle signal has been fired
//

Because we are passing it as a **value to an argument** instead of putting it in a **type annotation**, we have to use `Union` even in Python 3.10.

If it was in a type annotation we could have used the vertical bar, as:

```Python
some_variable: PlaneItem | CarItem
```

In Python 3.10 there's also a **new syntax** where you can put the possible types separated by a <abbr title='also called "bitwise or operator", but that meaning is not relevant here'>vertical bar (`|`)</abbr>.

=== "Python 3.10+"

    ```Python hl_lines="1"
    {!> ../../../docs_src/python_types/tutorial008b_py310.py!}
    ```

=== "Python 3.8+"

    ```Python hl_lines="1  4"

	// Facts of the specified concrete types.
	// An analyzer that uses facts may assume that its import
	// dependencies have been similarly analyzed before it runs.
	// Facts must be pointers.
	//
	// FactTypes establishes a "vertical" dependency between
	// analysis passes (same analyzer, different packages).
	FactTypes []Fact
}

func (a *Analyzer) String() string { return a.Name }

// A Pass provides information to the Run function that

	WatchFromStorageWithoutResourceVersion featuregate.Feature = "WatchFromStorageWithoutResourceVersion"

	// owner: @vinaykul
	// kep: http://kep.k8s.io/1287
	// alpha: v1.27
	//
	// Enables In-Place Pod Vertical Scaling
	InPlacePodVerticalScaling featuregate.Feature = "InPlacePodVerticalScaling"

	// owner: @p0lyn0mial
	// alpha: v1.27
	//
	// Allow the API server to stream individual items instead of chunking

alAlign:({addUtilities:i,matchUtilities:e})=>{i({".align-baseline":{"vertical-align":"baseline"},".align-top":{"vertical-align":"top"},".align-middle":{"vertical-align":"middle"},".align-bottom":{"vertical-align":"bottom"},".align-text-top":{"vertical-align":"text-top"},".align-text-bottom":{"vertical-align":"text-bottom"},".align-sub":{"vertical-align":"sub"},".align-super":{"vertical-align":"super"}}),e({align:t=>({"vertical-align":t})})},fontFamily:({matchUtilities:i,theme:e})=>{i({font:t=>{l...