<span style="background-color:#007166"><font color="#D3D7CF"> module </font></span>  🐍 main.py

     <span style="background-color:#007166"><font color="#D3D7CF"> code </font></span>  Importing the FastAPI app object from the module with the
             following code:

## Как это выглядит { #how-it-looks }

Сначала просто воспользуемся кодом и посмотрим, как он работает, а затем вернемся и разберемся, что происходит.

## Создание `main.py` { #create-main-py }

Скопируйте пример в файл `main.py`:

{* ../../docs_src/security/tutorial001_an_py310.py *}

## Запуск { #run-it }

/// info | Дополнительная информация

app = FastAPI()


class InternalError(Exception):
    pass


def get_username():
    try:
        yield "Rick"
    except InternalError:
        print("Oops, we didn't raise again, Britney 😱")


@app.get("/items/{item_id}")
def get_item(item_id: str, username: Annotated[str, Depends(get_username)]):
    if item_id == "portal-gun":
        raise InternalError(

        .encodedPath,
    ).isEqualTo("/a/b/c/")
  }

  @Test
  fun addPathSegments() {
    val base = parse("http://host/a/b/c")

    // Add a string with zero slashes: resulting URL gains one slash.
    assertThat(
      base
        .newBuilder()
        .addPathSegments("")
        .build()
        .encodedPath,
    ).isEqualTo("/a/b/c/")
    assertThat(
      base

package loggertypes

import "strconv"

func _() {
	// An "invalid array index" compiler error signifies that the constant values have changed.
	// Re-run the stringer command to generate them again.
	var x [1]struct{}
	_ = x[TargetConsole-1]
	_ = x[TargetHTTP-2]
	_ = x[TargetKafka-3]
}

const _TargetType_name = "ConsoleHTTPKafka"

var _TargetType_index = [...]uint8{0, 7, 11, 16}

                    "description": "Production environment",
                },
            ],
            "paths": {
                "/app": {
                    "get": {
                        "summary": "Read Main",
                        "operationId": "read_main_app_get",
                        "responses": {
                            "200": {
                                "description": "Successful Response",

   * {@code maximumSize / concurrencyLevel}.
   *
   * <p>When eviction is necessary, the cache evicts entries that are less likely to be used again.
   * For example, the cache may evict an entry because it hasn't been used recently or very often.
   *
   * <p>If {@code maximumSize} is zero, elements will be evicted immediately after being loaded into

            the dependency is declared again for the rest of the request (for example
            if the dependency is needed by several dependencies), the value will be
            re-used for the rest of the request.

            Set `use_cache` to `False` to disable this behavior and ensure the
            dependency is called again (if declared more than once) in the same request.

    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="system"/>
        <jsp:param name="menuType" value="scheduler"/>
    </jsp:include>
    <main class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">
                <div class="row mb-2">
                    <div class="col-sm-6">
                        <h1>

    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="system"/>
        <jsp:param name="menuType" value="dict"/>
    </jsp:include>
    <main class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">
                <div class="row mb-2">
                    <div class="col-sm-6">
                        <h1>