Angenommen, Sie verwenden in Ihrer Anwendung die Version `0.45.0`.

Wenn Sie eine `requirements.txt`-Datei verwenden, können Sie die Version wie folgt angeben:

```txt
fastapi==0.45.0
```

Das würde bedeuten, dass Sie genau die Version `0.45.0` verwenden.

Oder Sie können sie auch anpinnen mit:

// them are ANDed.
// The TopologySelectorTerm type implements a subset of the NodeSelectorTerm.
// +structType=atomic
message NodeSelectorTerm {
  // A list of node selector requirements by node's labels.
  // +optional
  repeated NodeSelectorRequirement matchExpressions = 1;

  // A list of node selector requirements by node's fields.
  // +optional

  // NodeName is a request to schedule this carp onto a specific node. If it is non-empty,
  // the scheduler simply schedules this carp onto that node, assuming that it fits resource
  // requirements.
  // +optional
  optional string nodeName = 10;

  // Host networking requested for this carp. Use the host's network namespace.
  // If this option is set, the ports that will be used must be specified.

Por exemplo, supondo que você está usando a versão `0.45.0` em sua aplicação.

Caso você utilize o arquivo `requirements.txt`, você poderia especificar a versão com:

```txt
fastapi==0.45.0
```

Isso significa que você conseguiria utilizar a versão exata `0.45.0`.

Ou, você poderia fixá-la com:

```txt

// be imported into `graph`. `prefix` is copied and has no lifetime
// requirements.
TF_CAPI_EXPORT extern void TF_ImportGraphDefOptionsSetPrefix(
    TF_ImportGraphDefOptions* opts, const char* prefix);

// Set the execution device for nodes in `graph_def`.
// Only applies to nodes where a device was not already explicitly specified.
// `device` is copied and has no lifetime requirements.

        " (${descriptionParts.joinToString(separator = ", ")})"
    } else ""
    description =
        "Builds Gradle with the version of Gradle which is currently under development (twice)$descriptionSuffix"

    requirements {
        // Gradleception is a heavy build which runs ~40m on EC2 agents but only ~20m on Hetzner agents
        requiresNotEc2Agent()
        requiresNotSharedHost()
    }

    dependencies {

[Using AWS JS SDK v2](https://github.com/minio/minio/blob/master/docs/extensions/s3zip/examples/aws-js/main.js)
[Using boto3](https://github.com/minio/minio/blob/master/docs/extensions/s3zip/examples/boto3/main.py)

## Requirements and limits

- ListObjectsV2 can only list the most recent ZIP archive version of your object, applicable only for versioned buckets.
- ListObjectsV2 API calls must be used to list zip file content.

  // runtime (using native Linux containers) will be used to run the containers
  // in a pod.
  // The handler must be lowercase, conform to the DNS Label (RFC 1123) requirements,
  // and is immutable.
  optional string handler = 2;

  // overhead represents the resource overhead associated with running a pod for a
  // given RuntimeClass. For more details, see

这样，你不必再去重新"安装"你的本地版本即可测试所有更改。

/// note | "技术细节"

仅当你使用此项目中的 `requirements.txt` 安装而不是直接使用 `pip install fastapi` 安装时，才会发生这种情况。

这是因为在 `requirements.txt` 中，本地的 FastAPI 是使用“可编辑” （`-e`）选项安装的

///

### 格式化

你可以运行下面的脚本来格式化和清理所有代码：

<div class="termy">

```console
$ bash scripts/format.sh
```

</div>

它还会自动对所有导入代码进行排序整理。

你现在就可以使用 **FastAPI** 创建生产环境应用程序（你可能已经这样做了一段时间），你只需确保使用的版本可以与其余代码正确配合即可。

## 固定你的 `fastapi` 版本

你应该做的第一件事是将你正在使用的 **FastAPI** 版本“固定”到你知道适用于你的应用程序的特定最新版本。

例如，假设你在应用程序中使用版本`0.45.0`。

如果你使用`requirements.txt`文件，你可以使用以下命令指定版本：

````txt
fastapi==0.45.0
````

这意味着你将使用版本`0.45.0`。

或者你也可以将其固定为：

````txt
fastapi>=0.45.0,<0.46.0
````

这意味着你将使用`0.45.0`或更高版本，但低于`0.46.0`，例如，版本`0.45.2`仍会被接受。