#### More details { #more-details }

Let's say your file is named `myapp.py`.

If you run it with:

<div class="termy">

```console
$ python myapp.py
```

</div>

then the internal variable `__name__` in your file, created automatically by Python, will have as value the string `"__main__"`.

So, the section:

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

will run.

---

	"github.com/minio/pkg/v3/env"
)

const (
	// EnvIdentityTLSEnabled is an environment variable that controls whether the X.509
	// TLS STS API is enabled. By default, if not set, it is enabled.
	EnvIdentityTLSEnabled = "MINIO_IDENTITY_TLS_ENABLE"

	// EnvIdentityTLSSkipVerify is an environment variable that controls whether
	// MinIO verifies the client certificate present by the client
	// when requesting temp. credentials.

$ python main.py

// As we didn't set the env var, we get the default value

Hello World from Python

// But if we create an environment variable first
$ export MY_NAME="Wade Wilson"

// And then call the program again
$ python main.py

// Now it can read the environment variable

Hello Wade Wilson from Python
```

</div>

////

//// tab | Windows PowerShell

<div class="termy">

fun Test.isUnitTest() = listOf("test", "writePerformanceScenarioDefinitions", "writeTmpPerformanceScenarioDefinitions").contains(name)

/**
 * If enabled, test JVM will inherit the DEVELOCITY_ACCESS_TOKEN
 * environment variable. This allows build scans to be published for integration tests.
 */
fun Test.inheritDevelocityAccessTokenEnv() = setOf("smoke-test").contains(project.name)

cairosvg==2.8.2
mkdocstrings[python]==0.30.1
griffe-typingdoc==0.3.0
griffe-warnings-deprecated==1.1.0
# For griffe, it formats with black
black==25.1.0
mkdocs-macros-plugin==1.4.1
markdown-include-variants==0.0.8

      if (values.hasAnyNonFinite()) {
        assertWithMessage("population covariance of %s", values).that(populationCovariance).isNaN();
        assertWithMessage("population covariance by addAll(PairedStats) of %s", values)
            .that(populationCovarianceByAddAllPartitionedPairedStats)
            .isNaN();
      } else {
        assertWithMessage("population covariance of %s", values)
            .that(populationCovariance)

        def line = 'java.exe  "C:\\Program Files\\Java\\jdk1.8\\bin\\java.exe" -Xms1536m -Xmx1536m -Dfile.encoding=windows-1252 -Duser.country=US -Duser.language=en -Duser.variant -cp P:\\subprojects\\performance\\build\\tmp\\performance-test-files\\FileSystemW.Test\\assemble_fo.hing\\fh0xl\\6.7-202010012357270000\\gradle-home\\lib\\gradle-launcher-6.7.jar org.gradle.launcher.daemon.bootstrap.GradleDaemon 6.7-20201001235727+0000'...

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
    fi
else
    JAVACMD=java
    if ! command -v java >/dev/null 2>&1
    then
        die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.

Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."

# specific language governing permissions and limitations
# under the License.

# -----------------------------------------------------------------------------
# Apache Maven Startup Script
#
# Environment Variable Prerequisites
#
#   JAVA_HOME           (Optional) Points to a Java installation.
#   MAVEN_ARGS          (Optional) Arguments passed to Maven before CLI arguments.

Eine dieser Variablen ist die `PATH`-Variable.

/// tip | Tipp

Sie können mehr über die `PATH`-Umgebungsvariable im Abschnitt [Umgebungsvariablen](environment-variables.md#path-environment-variable){.internal-link target=_blank} erfahren.

///