rocessData:!0,async:!0,contentType:"application/x-www-form-urlencoded; charset=UTF-8",accepts:{"*":zt,text:"text/plain",html:"text/html",xml:"application/xml, text/xml",json:"application/json, text/javascript"},contents:{xml:/\bxml\b/,html:/\bhtml/,json:/\bjson\b/},responseFields:{xml:"responseXML",text:"responseText",json:"responseJSON"},converters:{"* text":String,"text html":!0,"text json":JSON.parse,"text xml":ce.parseXML},flatOptions:{url:!0,context:!0}},ajaxSetup:function(e,t){return t?Gt(...

constraints.ParametersScriptAssert.message = La expresión de script "{script}" no es verdadera.
constraints.Range.message = {item} debe estar entre {min} y {max}.
constraints.SafeHtml.message = {item} contiene contenido HTML peligroso.
constraints.ScriptAssert.message = La expresión de script "{script}" no es verdadera.
constraints.URL.message = {item} no es una URL válida.
constraints.Required.message = {item} es obligatorio.

```Python hl_lines="3"
import os

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

/// tip | 팁

<a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> 의 두 번째 인자는 반환할 기본값입니다.

여기서는 `"World"`를 넣었기에 기본값으로써 사용됩니다. 넣지 않으면 `None` 이 기본값으로 사용됩니다.

///

그러면 해당 파이썬 프로그램을 다음과 같이 호출할 수 있습니다:

■特定商取引法に基づく表示
http://www.jp.playstation.com/R/aboutstore

■よくあるお問い合わせ（FAQ）
http://www.jp.playstation.com/support/

■株式会社ソニー・コンピュータエンタテインメントの個人情報保護方針
http://www.jp.playstation.com/about/privacy.html

            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>

constraints.ParametersScriptAssert.message = Der Skriptausdruck "{script}" ist nicht wahr.
constraints.Range.message = {item} muss zwischen {min} und {max} liegen.
constraints.SafeHtml.message = {item} enthält unsicheren HTML-Inhalt.
constraints.ScriptAssert.message = Der Skriptausdruck "{script}" ist nicht wahr.
constraints.URL.message = {item} ist keine gültige URL.
constraints.Required.message = {item} ist erforderlich.

        sslSocket.enabledProtocols.intersect(tlsVersionsAsString, naturalOrder())
      } else {
        sslSocket.enabledProtocols
      }

    // In accordance with https://tools.ietf.org/html/draft-ietf-tls-downgrade-scsv-00 the SCSV
    // cipher is added to signal that a protocol fallback has taken place.
    val supportedCipherSuites = sslSocket.supportedCipherSuites
    val indexOfFallbackScsv =

 * {@linkplain #close closed}. This was intended to approximately emulate the behavior of Java 7's
 * <a href="http://docs.oracle.com/javase/tutorial/essential/exceptions/tryResourceClose.html"
 * >try-with-resources</a> statement in JDK6-compatible code. Code using this should be
 * approximately equivalent in behavior to the same code written with try-with-resources.
 *

    // user-specified -XX:+DisableExplicitGC.
    //
    // TODO(user): Consider using
    // java/lang/management/OperatingSystemMXBean.html#getSystemLoadAverage()
    //
    // TODO(user): Consider scaling by number of mutator threads,
    // e.g. using Thread#activeCount()
    return max(10L, Runtime.getRuntime().totalMemory() / (32L * 1024L * 1024L));
  }

{* ../../docs_src/query_params_str_validations/tutorial006.py hl[7] *}

/// info

Si vous n'avez jamais vu ce `...` auparavant : c'est une des constantes natives de Python <a href="https://docs.python.org/fr/3/library/constants.html#Ellipsis" class="external-link" target="_blank">appelée "Ellipsis"</a>.

///

Cela indiquera à **FastAPI** que la présence de ce paramètre est obligatoire.

## Liste de paramètres / valeurs multiples via Query