```

</div>

dann hat in Ihrer Datei die interne Variable `__name__`, die von Python automatisch erstellt wird, als Wert den String `"__main__"`.

Daher wird der Abschnitt:

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

ausgeführt.

---

Dies wird nicht passieren, wenn Sie das Modul (die Datei) importieren.

Wenn Sie also eine weitere Datei `importer.py` mit folgendem Inhalt haben:

```Python

  var password: String? = null
  var host = ""
  var port = ""
  var path = ""
  var query = ""
  var fragment = ""

  fun expectParseFailure() = scheme.isEmpty()

  private operator fun set(
    name: String,
    value: String,
  ) {
    when (name) {
      "s" -> scheme = value
      "u" -> username = value
      "pass" -> password = value
      "h" -> host = value
      "port" -> port = value

 */
public interface DfsReferralDataInternal extends DfsReferralData {

    /**
     * Replaces the host with the given FQDN if it is currently unqualified
     *
     * @param fqdn the fully qualified domain name to use
     */
    void fixupHost(String fqdn);

    /**
     * Possibly appends the given domain name to the host name if it is currently unqualified
     *
     * @param domain the domain name to append
     */

			},
			Object: event.Object{
				Key:       keyName,
				VersionID: args.Object.VersionID,
				Sequencer: uniqueID,
			},
		},
		Source: event.Source{
			Host:      args.Host,
			UserAgent: args.UserAgent,
		},
	}

	isRemovedEvent := args.EventName == event.ObjectRemovedDelete ||
		args.EventName == event.ObjectRemovedDeleteMarkerCreated ||

        // Test with client parameters
        configParameters = "client.host=localhost\nclient.port=9200";
        result = ParameterUtil.createConfigParameterMap(configParameters);
        assertEquals(2, result.get(ConfigName.CLIENT).size());
        assertEquals("localhost", result.get(ConfigName.CLIENT).get("host"));
        assertEquals("9200", result.get(ConfigName.CLIENT).get("port"));

		}
		if !enabled {
			continue
		}
		var brokers []xnet.Host
		kafkaBrokers := getCfgVal(EnvKafkaBrokers, k, kv.Get(KafkaBrokers))
		if len(kafkaBrokers) == 0 {
			return cfg, config.Errorf("kafka 'brokers' cannot be empty")
		}
		for s := range strings.SplitSeq(kafkaBrokers, config.ValueSeparator) {
			var host *xnet.Host
			host, err = xnet.ParseHost(s)
			if err != nil {
				break
			}

     * throw on a regular basis here.
     *
     * @param host the hostname to resolve
     * @param tc the CIFS context
     * @return resolved name, null if not found
     */
    public synchronized NbtAddress getByName(final String host, final CIFSContext tc) {
        return getByName(new Name(tc.getConfig(), host, 0x20, null), tc);
    }

                fessLogPath = "../../logs";
            }
            op.replace("fess.log.path", fessLogPath.replace("\\", "/"));
        }).asYouLikeIt(resource -> {
            final Host host = resource.getHost();
            if (host instanceof final StandardHost standardHost) {
                standardHost.setErrorReportValveClass(SuppressErrorReportValve.class.getName());
            }

      } else {
        requestBuilder.header("Transfer-Encoding", "chunked")
        requestBuilder.removeHeader("Content-Length")
      }
    }

    if (userRequest.header("Host") == null) {
      requestBuilder.header("Host", userRequest.url.toHostHeader())
    }

    if (userRequest.header("Connection") == null) {
      requestBuilder.header("Connection", "Keep-Alive")
    }

因此，這段：

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

會被執行。

---

如果你是匯入該模組（檔案），就不會發生這件事。

所以，如果你有另一個檔案 `importer.py`，內容如下：

```Python
from myapp import app

# 其他程式碼
```

在那種情況下，`myapp.py` 中自動建立的變數 `__name__` 就不會是 `"__main__"`。

因此，這一行：

```Python
    uvicorn.run(app, host="0.0.0.0", port=8000)
```

就不會被執行。

/// info | 說明