# 🛠️ - 📉

🥇, 👆 💪 💚 👀 🔰 🌌 [ℹ FastAPI & 🤚 ℹ](help-fastapi.md){.internal-link target=_blank}.

## 🛠️

🚥 👆 ⏪ 🖖 🗃 & 👆 💭 👈 👆 💪 ⏬ 🤿 📟, 📥 📄 ⚒ 🆙 👆 🌐.

### 🕹 🌐 ⏮️ `venv`

👆 💪 ✍ 🕹 🌐 📁 ⚙️ 🐍 `venv` 🕹:

<div class="termy">

```console
$ python -m venv env
```

</div>

👈 🔜 ✍ 📁 `./env/` ⏮️ 🐍 💱 &amp; ⤴️ 👆 🔜 💪 ❎ 📦 👈 ❎ 🌐.

### 🔓 🌐

🔓 🆕 🌐 ⏮️:

///

**FastAPI**는 모두 Pydantic을 기반으로 되어 있습니다.

이 모든 것이 실제로 어떻게 사용되는지에 대해서는 [자습서 - 사용자 안내서](tutorial/index.md){.internal-link target=_blank} 에서 더 많이 확인하실 수 있습니다.

## **FastAPI**에서의 타입 힌트

**FastAPI**는 여러 부분에서 타입 힌트의 장점을 취하고 있습니다.

**FastAPI**에서 타입 힌트와 함께 매개변수를 선언하면 장점은:

* **에디터 도움**.
* **타입 확인**.

    }

    public ArtifactResolutionResult setRepositories(final List<ArtifactRepository> repositories) {
        this.repositories = repositories;

        return this;
    }

    //
    // Internal
    //

    private <T> List<T> initList(final List<T> l) {
        if (l == null) {
            return new ArrayList<>();
        }
        return l;
    }

    public String toString() {

// along with this program.  If not, see <http://www.gnu.org/licenses/>.

package cmd

import (
	"context"
	"fmt"
	"runtime/debug"
	"sync"
	"time"

	"github.com/minio/minio/internal/logger"
)

// localMetacacheMgr is the *local* manager for this peer.
// It should never be used directly since buckets are
// distributed deterministically.
// Therefore no cluster locks are required.

 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package okhttp3.internal.idn

import okio.Buffer
import okio.ByteString.Companion.encodeUtf8

/**
 * An [RFC 3492] punycode decoder for converting ASCII to Unicode domain name labels. This is

#       Darwin, MinGW, and NonStop.
#
#   (3) This script is generated from the Groovy template
#       https://github.com/gradle/gradle/blob/HEAD/subprojects/plugins/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
#       within the Gradle project.
#
#       You can find Gradle at https://github.com/gradle/gradle/.
#
##############################################################################

    return set;
  }

  /**
   * Creates a {@code CompactLinkedHashSet} instance, with a high enough "initial capacity" that it
   * <i>should</i> hold {@code expectedSize} elements without rebuilding internal data structures.
   *
   * @param expectedSize the number of elements you expect to add to the returned set
   * @return a new, empty {@code CompactLinkedHashSet} with enough capacity to hold {@code

///

## Without Pydantic

Si vous ne voulez pas utiliser des modèles Pydantic, vous pouvez aussi utiliser des paramètres de **Corps**. Pour cela, allez voir la partie de la documentation sur  [Corps de la requête - Paramètres multiples](body-multiple-params.md){.internal-link target=_blank}....

书接上文，多个关联模型这种情况很常见。

特别是用户模型，因为：

* **输入模型**应该含密码
* **输出模型**不应含密码
* **数据库模型**需要加密的密码

/// danger | "危险"

千万不要存储用户的明文密码。始终存储可以进行验证的**安全哈希值**。

如果不了解这方面的知识，请参阅[安全性中的章节](security/simple-oauth2.md#password-hashing){.internal-link target=_blank}，了解什么是**密码哈希**。

///

## 多个模型

下面的代码展示了不同模型处理密码字段的方式，及使用位置的大致思路：

//// tab | Python 3.10+

```Python hl_lines="7  9  14  20  22  27-28  31-33  38-39"