當你需要安裝或升級套件時，執行本操作**一次**；

如果你需要再升級版本或新增套件，你可以**再次執行此操作**。

///

### 直接安裝套件

如果你急於安裝，不想使用檔案來聲明專案的套件依賴，你可以直接安裝它們。

/// tip

將程式所需的套件及其版本放在檔案中（例如 `requirements.txt` 或 `pyproject.toml`）是個好（而且非常好）的主意。

///

//// tab | `pip`

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

////

//// tab | `uv`

当你需要安装或升级软件包时，执行本操作**一次**；

如果你需要再升级版本或添加新软件包，你可以**再次执行此操作**。

///

### 直接安装包

如果你急于安装，不想使用文件来声明工程的软件包依赖，您可以直接安装它们。

/// tip

将程序所需的软件包及其版本放在文件中（例如 `requirements.txt` 或 `pyproject.toml`）是个好（并且非常好）的主意。

///

//// tab | `pip`

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

////

//// tab | `uv`

            scm's {@code child.scm.connection.inherit.append.path="false"}
            @see <a href="https://maven.apache.org/scm/scm-url-format.html">URL format</a>
            @see <a href="https://maven.apache.org/scm/scms-overview.html">list of supported SCMs</a>
            ]]>
          </description>
          <type>String</type>
        </field>
        <field>

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip | Dica

O segundo argumento para <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> é o valor padrão a ser retornado.

Se não for fornecido, é `None` por padrão, Aqui fornecemos `"World"` como o valor padrão a ser usado.

///

CYGWIN*) cygwin=true ;;
MINGW*) mingw=true ;;
Darwin*)
  darwin=true
  # Use /usr/libexec/java_home if available, otherwise fall back to /Library/Java/Home
  # See https://developer.apple.com/library/mac/qa/qa1170/_index.html
  if [ -z "$JAVA_HOME" ]; then
    if [ -x "/usr/libexec/java_home" ]; then
      JAVA_HOME="$(/usr/libexec/java_home)"
      export JAVA_HOME
    else
      JAVA_HOME="/Library/Java/Home"
      export JAVA_HOME

efault(t.querySelectorAll(".tooltip-inner")),this.getTitle()),o.default(t).removeClass("fade show")},e.setElementContent=function(t,e){"object"!=typeof e||!e.nodeType&&!e.jquery?this.config.html?(this.config.sanitize&&(e=At(e,this.config.whiteList,this.config.sanitizeFn)),t.html(e)):t.text(e):this.config.html?o.default(e).parent().is(t)||t.empty().append(e):t.text(o.default(e).text())},e.getTitle=function(){var t=this.element.getAttribute("data-original-title");return t||(t="function"==typeof th...

                    final TarExtractor tarExtractor = container.getComponent("tarExtractor");
                    factory.addExtractor("text/plain", textExtractor);
                    factory.addExtractor("text/html", tikaExtractor);
                    factory.addExtractor("application/zip", zipExtractor);
                    factory.addExtractor("application/x-tar", tarExtractor);
                });

constraints.ParametersScriptAssert.message = De scriptuitdrukking "{script}" is niet waar.
constraints.Range.message = {item} moet tussen {min} en {max} liggen.
constraints.SafeHtml.message = {item} bevat gevaarlijke HTML-inhoud.
constraints.ScriptAssert.message = De scriptuitdrukking "{script}" is niet waar.
constraints.URL.message = {item} is geen geldige URL.
constraints.Required.message = {item} is vereist.

constraints.ParametersScriptAssert.message = Скриптовое выражение "{script}" не является истинным.
constraints.Range.message = {item} должно быть в диапазоне от {min} до {max}.
constraints.SafeHtml.message = {item} содержит небезопасный HTML-контент.
constraints.ScriptAssert.message = Скриптовое выражение "{script}" не является истинным.
constraints.URL.message = {item} - неверный URL-адрес.
constraints.Required.message = {item} обязательно.

        }

        HTTP_MOVED_TEMP,
        HTTP_TEMP_REDIRECT,
        -> {
          // These codes can only be cached with the right response headers.
          // http://tools.ietf.org/html/rfc7234#section-3
          // s-maxage is not checked because OkHttp is a private cache that should ignore s-maxage.
          if (response.header("Expires") == null &&
            response.cacheControl.maxAgeSeconds == -1 &&