例如，你可以创建一个名为 `main.py` 的文件，其中包含以下内容：

```Python hl_lines="3"
import os

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

/// tip

第二个参数是 <a href="https://docs.python.org/zh-cn/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> 的默认返回值。

如果没有提供，默认值为 `None`，这里我们提供 `"World"` 作为默认值。

///

然后你可以调用这个 Python 程序：

        } finally {
            try {
                processHelper.destroyProcess(sessionId);
            } finally {
                if (propFile != null && !propFile.delete()) {
                    logger.warn("Failed to delete properties file: {}", propFile.getAbsolutePath());
                }
                deleteTempDir(ownTmpDir);
            }
        }
    }

    @Override

     *
     * @param fileName the name of the file to delete
     * @param jarPath the path to the JAR file
     * @throws PluginException if deletion fails
     */
    protected void uninstall(final String fileName, final Path jarPath) {
        try {
            Files.delete(jarPath);
        } catch (final IOException e) {
            throw new PluginException("Failed to delete the artifact " + fileName, e);
        }
    }

## Overview

* Full-Featured ORM
* Associations (Has One, Has Many, Belongs To, Many To Many, Polymorphism, Single-table inheritance)
* Hooks (Before/After Create/Save/Update/Delete/Find)
* Eager loading with `Preload`, `Joins`
* Transactions, Nested Transactions, Save Point, RollbackTo to Saved Point
* Context, Prepared Statement Mode, DryRun Mode
* Batch Insert, FindInBatches, Find To Map

./mc encrypt set sse-kms minio-default-key myminio/versioned-1

./mc mirror internal myminio/versioned/ --quiet >/dev/null
./mc mirror internal myminio/versioned-1/ --quiet >/dev/null

## Soft delete (creates delete markers)
./mc rm -r --force myminio/versioned >/dev/null
./mc rm -r --force myminio/versioned-1 >/dev/null

## mirror again to create another set of version on top

...

#### Operação { #operation }

"Operação" aqui se refere a um dos "métodos" HTTP.

Um dos:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...e os mais exóticos:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

No protocolo HTTP, você pode se comunicar com cada path usando um (ou mais) desses "métodos".

---

#### Operación { #operation }

"Operación" aquí se refiere a uno de los "métodos" HTTP.

Uno de:

* `POST`
* `GET`
* `PUT`
* `DELETE`

...y los más exóticos:

* `OPTIONS`
* `HEAD`
* `PATCH`
* `TRACE`

En el protocolo HTTP, puedes comunicarte con cada path usando uno (o más) de estos "métodos".

---

package kms

import (
	"os"
	"testing"
)

func TestIsPresent(t *testing.T) {
	for i, test := range isPresentTests {
		os.Clearenv()
		for k, v := range test.Env {
			t.Setenv(k, v)
		}

		ok, err := IsPresent()
		if err != nil && !test.ShouldFail {
			t.Fatalf("Test %d: %v", i, err)
		}
		if err == nil && test.ShouldFail {
			t.Fatalf("Test %d: should have failed but succeeded", i)

        StringBuilder sb = new StringBuilder();
        sb.append(dm).append(gidNumber);
        sb.append(dm).append(name);
        if (sb.length() > dm.length()) {
            sb.delete(0, dm.length());
        }
        sb.insert(0, "{").append("}");
        return sb.toString();
    }

    // ===================================================================================