```console
$ openssl rand -hex 32

09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7
```

</div>

然后，把生成的密钥复制到变量**SECRET_KEY**，注意，不要使用本例所示的密钥。

创建指定 JWT 令牌签名算法的变量 **ALGORITHM**，本例中的值为 `"HS256"`。

创建设置令牌过期时间的变量。

定义令牌端点响应的 Pydantic 模型。

创建生成新的访问令牌的工具函数。

```Python hl_lines="6  12-14  28-30  78-86"
{!../../../docs_src/security/tutorial004.py!}
```

## 更新依赖项

<div class="termy">

```console
$ openssl rand -hex 32

09d25e094faa6ca2556c818166b7a9563b93f7099f6f0f4caa6cf63b88e8d3e7
```

</div>

&amp; 📁 🔢 🔢 `SECRET_KEY` (🚫 ⚙️ 1️⃣ 🖼).

✍ 🔢 `ALGORITHM` ⏮️ 📊 ⚙️ 🛑 🥙 🤝 &amp; ⚒ ⚫️ `"HS256"`.

✍ 🔢 👔 🤝.

🔬 Pydantic 🏷 👈 🔜 ⚙️ 🤝 🔗 📨.

✍ 🚙 🔢 🏗 🆕 🔐 🤝.

=== "🐍 3️⃣.6️⃣ &amp; 🔛"

    ```Python hl_lines="6  12-14  28-30  78-86"

import java.util.Map;

/**
 * Enumerates several algorithms providing equivalent functionality to {@link Quantiles}, for use in
 * {@link QuantilesBenchmark}. These algorithms each calculate either a single quantile or multiple
 * quantiles. All algorithms modify the dataset they are given (the cost of a copy to avoid this
 * will be constant across algorithms).
 *
 * @author Pete Gillin
 * @since 20.0
 */

import java.util.Map;

/**
 * Enumerates several algorithms providing equivalent functionality to {@link Quantiles}, for use in
 * {@link QuantilesBenchmark}. These algorithms each calculate either a single quantile or multiple
 * quantiles. All algorithms modify the dataset they are given (the cost of a copy to avoid this
 * will be constant across algorithms).
 *
 * @author Pete Gillin
 * @since 20.0
 */

architecture gives flexibility to the application developer, whereas in previous “parameter server” designs the management of shared state is built into the system, TensorFlow enables developers to experiment with novel optimizations and training algorithms. TensorFlow supports a variety of applications, with a focus on training and inference on deep neural networks. Several Google services use TensorFlow in production, we have released it as an open-source project, and it has become widely used for...

import com.google.caliper.Param;
import com.google.caliper.api.SkipThisScenarioException;
import com.google.common.primitives.Doubles;
import java.util.Random;

/**
 * Benchmarks for various algorithms for computing the mean and/or variance.
 *
 * @author Louis Wasserman
 */
public class StatsBenchmark {

  enum MeanAlgorithm {
    SIMPLE {
      @Override
      double mean(double[] values) {

import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.charset.Charset;
import java.util.Arrays;

/**
 * Skeleton implementation of {@link HashFunction}, appropriate for non-streaming algorithms. All
 * the hash computation done using {@linkplain #newHasher()} are delegated to the {@linkplain
 * #hashBytes(byte[], int, int)} method.
 *
 * @author Dimitris Andreou
 */
@Immutable

import com.google.caliper.Param;
import com.google.caliper.api.SkipThisScenarioException;
import com.google.common.primitives.Doubles;
import java.util.Random;

/**
 * Benchmarks for various algorithms for computing the mean and/or variance.
 *
 * @author Louis Wasserman
 */
public class StatsBenchmark {

  enum MeanAlgorithm {
    SIMPLE {
      @Override
      double mean(double[] values) {

URLs are abstract:

chaque mois, vous pouvez lire le <a href="https://github.com/tiangolo/fastapi/blob/master/.github/actions/people/app/main.py" class="external-link" target="_blank">code source ici</a>.

Je me réserve également le droit de mettre à jour l'algorithme, les sections, les seuils, etc. (juste au cas où 🤷)....