*/
    public K getKeyAt(final int index) {
        return getEntryAt(index).getKey();
    }

    /**
     * Returns the {@link java.util.Map.Entry} at the specified index.
     *
     * @param index
     *            the index
     * @return the {@link java.util.Map.Entry} at the specified index
     */
    public Map.Entry<K, V> getEntryAt(final int index) {

Здесь мы рассмотрим пример с использованием <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">SQLModel</a>.

**SQLModel** построен поверх <a href="https://www.sqlalchemy.org/" class="external-link" target="_blank">SQLAlchemy</a> и Pydantic. Его создал тот же автор, что и **FastAPI**, чтобы он идеально подходил для приложений FastAPI, которым нужны **SQL базы данных**.

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link SettingsBuilderException}.
     *
     * @return the problems that were encountered during the settings building, can be empty but never {@code null}

    /**
     * Gets the problems that were encountered during the settings building. Note that only problems of severity
     * {@link BuilderProblem.Severity#WARNING} and below are reported here. Problems with a higher severity level cause
     * the settings builder to fail with a {@link ToolchainsBuilderException}.
     *
     * @return the problems that were encountered during the settings building, can be empty but never {@code null}

import static java.util.Arrays.asList;

import java.lang.reflect.Method;
import java.util.Collection;
import java.util.Set;
import junit.framework.Test;

/**
 * Tests the {@link Set} implementations of {@link java.util}, suppressing tests that trip known
 * OpenJDK 6 bugs.
 *
 * @author Kevin Bourrillion
 */
@AndroidIncompatible // test-suite builders
public class OpenJdk6SetTests extends TestsForSetsInJavaUtil {

 * under the License.
 */
package org.apache.maven.model.building;

import org.apache.maven.building.StringSource;

/**
 * Wraps an ordinary {@link CharSequence} as a model source.
 *
 *
 * @deprecated instead use {@link StringSource}
 */
@Deprecated
public class StringModelSource extends StringSource implements ModelSource {

    /**

 * under the License.
 */
package org.apache.maven.cling.invoker.logging;

import org.apache.maven.api.cli.Logger;

import static java.util.Objects.requireNonNull;

/**
 * Proto {@link Logger} that just passes to functioning {@link org.slf4j.Logger} instance.
 */
public class Slf4jLogger implements Logger {
    private final org.slf4j.Logger logger;

    public Slf4jLogger(org.slf4j.Logger logger) {

/// info

To receive uploaded files and/or form data, first install <a href="https://github.com/Kludex/python-multipart" class="external-link" target="_blank">`python-multipart`</a>.

Make sure you create a [virtual environment](../virtual-environments.md){.internal-link target=_blank}, activate it, and then install it, for example:

```console
$ pip install python-multipart
```

///

例如：

* <a href="https://code.visualstudio.com/docs/python/environments#_select-and-activate-an-environment" class="external-link" target="_blank">VS Code</a>
* <a href="https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html" class="external-link" target="_blank">PyCharm</a>

/// tip

通常你只需要在建立虛擬環境時執行此操作**一次**。

///

## 退出虛擬環境

當你完成工作後，你可以**退出**虛擬環境。

例如：

* <a href="https://code.visualstudio.com/docs/python/environments#_select-and-activate-an-environment" class="external-link" target="_blank">VS Code</a>
* <a href="https://www.jetbrains.com/help/pycharm/creating-virtual-environment.html" class="external-link" target="_blank">PyCharm</a>

/// tip

通常你只需要在创建虚拟环境时执行此操作**一次**。

///

## 退出虚拟环境

当你完成工作后，你可以**退出**虚拟环境。