In Python there's a way to make an instance of a class a "callable".

Not the class itself (which is already a callable), but an instance of that class.

To do that, we declare a method `__call__`:

{* ../../docs_src/dependencies/tutorial011_an_py39.py hl[12] *}

///

{% for section_name, section_content in external_links.items() %}

## {{ section_name }}

{% for lang_name, lang_content in section_content.items() %}

### {{ lang_name }}

{% for item in lang_content %}

WebSocketErrorModel: Type[BaseModel] = create_model("WebSocket")


class FastAPIError(RuntimeError):
    """
    A generic, FastAPI-specific error.
    """


class ValidationException(Exception):
    def __init__(self, errors: Sequence[Any]) -> None:
        self._errors = errors

    def errors(self) -> Sequence[Any]:
        return self._errors


class RequestValidationError(ValidationException):

        assertThat(GenericsUtil.isTypeOf(GenericsUtil.getElementTypeOfList(t2), Class.class), is(true));

        final Method m3 = ListType.class.getMethod("listOfWildcard");
        final Type t3 = m3.getGenericReturnType();
        assertThat(GenericsUtil.isTypeOf(t3, List.class), is(true));
        assertThat(WildcardType.class.isInstance(GenericsUtil.getElementTypeOfList(t3)), is(true));
    }

    /**

- <a href="https://github.com/tiangolo/full-stack" class="external-link" target="_blank">https://github.com/tiangolo/full-stack</a>
- <a href="https://github.com/tiangolo/full-stack-flask-couchbase" class="external-link" target="_blank">https://github.com/tiangolo/full-stack-flask-couchbase</a>

        Integer.class,
        long.class,
        Long.class,
        short.class,
        Short.class,
        byte.class,
        Byte.class,
        boolean.class,
        Boolean.class,
        char.class,
        Character.class,
        int[].class,
        Object[].class,
        UnsignedInteger.class,
        UnsignedLong.class,
        BigInteger.class,
        BigDecimal.class,

            <div class="container-fluid">
                <div class="row mb-2">
                    <div class="col-sm-6">
                        <h1>
                            <la:message key="labels.search_list_configuration"/>
                        </h1>
                    </div>
                    <div class="col-sm-6">
                        <ol class="breadcrumb float-sm-right">

package jcifs.smb1.dcerpc.msrpc;

import jcifs.smb1.dcerpc.*;
import jcifs.smb1.dcerpc.ndr.*;

public class samr {

    public static String getSyntax() {
        return "12345778-1234-abcd-ef00-0123456789ac:1.0";
    }

    public static final int ACB_DISABLED = 1;
    public static final int ACB_HOMDIRREQ = 2;
    public static final int ACB_PWNOTREQ = 4;
    public static final int ACB_TEMPDUP = 8;

### ✅ ⚫️

📂 👆 🖥 <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

👆 🔜 👀 🎻 📨:

```JSON
{"message": "Hello World"}
```

### 🎓 🛠️ 🩺

🔜 🚶 <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

👆 🔜 👀 🏧 🎓 🛠️ 🧾 (🚚 <a href="https://github.com/swagger-api/swagger-ui" class="external-link" target="_blank">🦁 🎚</a>):

//// tab | Linux, macOS, Windows Bash

<div class="termy">

```console
// Вы можете создать переменную окружения MY_NAME с помощью
$ export MY_NAME="Wade Wilson"

// Затем её можно использовать в других программах, например
$ echo "Hello $MY_NAME"

Hello Wade Wilson
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

```console