ask for user input. If no input is provided, the default is used.

  Args:
    environ_cp: copy of the os.environ.
    var_name: string for name of environment variable, e.g. "TF_NEED_CUDA".
    ask_for_var: string for how to ask for user input.
    var_default: default value string.

  Returns:
    string value for var_name
  """

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

							class="btn btn-primary btn-block"
							value="<la:message key="labels.login.update"/>">
							<em class="fa fa-pencil-alt">
							<la:message key="labels.login.update" />
						</button>
					</div>
				</la:form>
			</div>
		</div>
	</div>
	<input type="hidden" id="contextPath" value="${contextPath}" />

						<button type="submit" name="login"
							class="btn btn-primary btn-block"
							value="<la:message key="labels.login"/>">
							<i class="fa fa-sign-in" aria-hidden="true"></i>
							<la:message key="labels.login" />
						</button>
					</div>
				</la:form>
			</div>
		</div>
	</div>
	<input type="hidden" id="contextPath" value="${contextPath}" />

If you run it with:

<div class="termy">

```console
$ python myapp.py
```

</div>

then the internal variable `__name__` in your file, created automatically by Python, will have as value the string `"__main__"`.

So, the section:

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

will run.

---

This won't happen if you import that module (file).

  * Kube-Proxy now defaults to an iptables-based proxy. If the --proxy-mode flag is
specified while starting kube-proxy (‘userspace’ or ‘iptables’), the flag value
will be respected. If the flag value is not specified, the kube-proxy respects
the Node object annotation: ‘net.beta.kubernetes.io/proxy-mode’. If the
annotation is not specified, then ‘iptables’ mode is the default. If kube-proxy

        return directive.allows(path);
    }

    /**
     * Gets the crawl delay value for the specified user agent from robots.txt.
     * The crawl delay specifies the time (in seconds) to wait between successive requests.
     *
     * @param userAgent The user agent string to match against robots.txt directives
     * @return The crawl delay value in seconds. Returns 0 if no matching directive is found

    /** Version number for optimistic locking */
    public String versionNo;

    /**
     * Clears all pagination state and search criteria.
     * Resets the pager to its initial state with default values.
     */
    public void clear() {
        allRecordCount = 0;
        allPageCount = 0;
        existPrePage = false;
        existNextPage = false;
        pageSize = getDefaultPageSize();

Realizará la validación de los datos compuestos, y los documentará así para el esquema de OpenAPI y la documentación automática.

## Valores singulares en el cuerpo { #singular-values-in-body }

De la misma manera que hay un `Query` y `Path` para definir datos extra para parámetros de query y path, **FastAPI** proporciona un equivalente `Body`.

* `skip`, типа `int` и со значением по умолчанию `0`.
* `limit`, необязательный `int`.

/// tip | Подсказка

Вы можете использовать класс `Enum` также, как ранее применяли его с [Path-параметрами](path-params.md#predefined-values){.internal-link target=_blank}.