## Call `uvicorn` { #call-uvicorn }

In your FastAPI application, import and run `uvicorn` directly:

{* ../../docs_src/debugging/tutorial001_py39.py hl[1,15] *}

### About `__name__ == "__main__"` { #about-name-main }

The main purpose of the `__name__ == "__main__"` is to have some code that is executed when your file is called with:

<div class="termy">

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

</div>

    <jsp:include page="/WEB-INF/view/common/admin/sidebar.jsp">
        <jsp:param name="menuCategoryType" value="user"/>
        <jsp:param name="menuType" value="group"/>
    </jsp:include>
    <main class="content-wrapper">
        <div class="content-header">
            <div class="container-fluid">
                <div class="row mb-2">
                    <div class="col-sm-6">
                        <h1>

  /**
   * Returns an exception handler that exits the system. This is particularly useful for the main
   * thread, which may start up other, non-daemon threads, but fail to fully initialize the
   * application successfully.
   *
   * <p>Example usage:
   *
   * <pre>
   * public static void main(String[] args) {
   *   Thread.currentThread().setUncaughtExceptionHandler(UncaughtExceptionHandlers.systemExit());
   *   ...

    include       /etc/nginx/mime.types;
    default_type  application/octet-stream;

    log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
                      '$status $body_bytes_sent "$http_referer" '
                      '"$http_user_agent" "$http_x_forwarded_for"';

    access_log  /var/log/nginx/access.log  main;
    sendfile        on;
    keepalive_timeout  65;

    # include /etc/nginx/conf.d/*.conf;

// See the License for the specific language governing permissions and
// limitations under the License.
//

package main

import (
	"context"
	"encoding/json"
	"fmt"
	"log"
	"os"
	"time"

	"github.com/minio/madmin-go/v3"
)

func main() {
	// Note: YOUR-ACCESSKEYID, YOUR-SECRETACCESSKEY are
	// dummy values, please replace them with original values.

		sudo chown "$(id -u):$(id -g)" ${device} ${WORK_DIR}/mnt/disk${i}/
	done
	set +e
}

# Start a distributed MinIO setup, unmount one disk and check if it is formatted
function main() {
	start_port=$(shuf -i 10000-65000 -n 1)
	start_minio ${start_port}

	# Unmount the disk, after the unmount the device id
	# /tmp/xxx/mnt/disk4 will be the same as '/' and it
	# will be detected as root disk

on:
  # For Branch-Protection check. Only the default branch is supported. See
  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#branch-protection
  branch_protection_rule:
  # To guarantee Maintained check is occasionally updated. See
  # https://github.com/ossf/scorecard/blob/main/docs/checks.md#maintained
  schedule:
    - cron: '26 3 * * 2'
  push:
    branches: [ "master" ]

// Using star import to workaround https://youtrack.jetbrains.com/issue/KTIJ-24390
import org.gradle.kotlin.dsl.*
import org.gradle.kotlin.dsl.support.serviceOf

/**
 * In build-logic and main build, register a BuildService instance separately,
 * which collects necessary information for Build Scan.
 */
fun <T : AbstractBuildScanInfoCollectingService> Project.registerBuildScanInfoCollectingService(

    local body=$(echo "$response" | head -n -1)

    if [[ "$http_code" -ge 400 ]]; then
        printf "Error: HTTP %s - %s\n" "$http_code" "$body" >&2
        exit 1
    fi

    echo "$body"
}

main() {
    WRAPPER_VERSION="${1:-}"

    : "${DEFAULT_BRANCH:?DEFAULT_BRANCH environment variable is required}"
    : "${GITHUB_TOKEN:?GITHUB_TOKEN environment variable is required}"

<div class="termy">

```console
// Here we don't set the env var yet
$ 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
```