{* ../../docs_src/extra_models/tutorial005_py310.py hl[6] *}

## Özet { #recap }

Her duruma göre birden fazla Pydantic modeli kullanın ve gerekirse özgürce inheritance uygulayın.

### Problem { #the-problem }

Peki package'leri global Python environment'a kurmanın sorunu ne?

Bir noktada, muhtemelen **farklı package**'lere bağımlı birçok farklı program yazacaksınız. Ayrıca üzerinde çalıştığınız bazı projeler, aynı package'in **farklı versiyonlarına** ihtiyaç duyacak. 😱

  private static final long K1 = 0x0f0e0d0c0b0a0908L;
  private static final HashFunction SIP_WITH_KEY = sipHash24(K0, K1);
  private static final HashFunction SIP_WITHOUT_KEY = sipHash24();

  // These constants were originally ported from https://www.131002.net/siphash/siphash24.c. See:
  // https://github.com/nahi/siphash-java-inline/blob/master/src/test/java/org/jruby/util/SipHashInlineTest.java
  private static final long[] EXPECTED =

  private static final long K1 = 0x0f0e0d0c0b0a0908L;
  private static final HashFunction SIP_WITH_KEY = sipHash24(K0, K1);
  private static final HashFunction SIP_WITHOUT_KEY = sipHash24();

  // These constants were originally ported from https://www.131002.net/siphash/siphash24.c. See:
  // https://github.com/nahi/siphash-java-inline/blob/master/src/test/java/org/jruby/util/SipHashInlineTest.java
  private static final long[] EXPECTED =

  /** Return type from "contains the following elements" assertions. */
  public interface Ordered {
    /**
     * Attests that the expected values must not just be present but must be present in the order
     * they were given.
     */
    void inOrder();
  }

  @IgnoreJRERequirement // *should* be redundant with the annotation on SpliteratorTester
  private abstract static class GeneralSpliterator<E extends @Nullable Object> {

  /** Return type from "contains the following elements" assertions. */
  public interface Ordered {
    /**
     * Attests that the expected values must not just be present but must be present in the order
     * they were given.
     */
    void inOrder();
  }

  private abstract static class GeneralSpliterator<E extends @Nullable Object> {
    final Spliterator<E> spliterator;

    GeneralSpliterator(Spliterator<E> spliterator) {

Here are the general instructions for the tasks you can perform.

Thanks a lot for your help. 🙇

## Be Nice

First of all, be nice. 😊

You probably are super nice if you were added to the team, but it's worth mentioning it. 🤓

### When Things are Difficult

        fail(
            "contents were not equal and in the same order: "
                + "expected = "
                + expected
                + ", actual = "
                + actual);
      }
    }

    if (expectedIter.hasNext() || actualIter.hasNext()) {
      // actual either had too few or too many elements
      fail(
          "contents were not equal and in the same order: "

        String result1 = purgeDocJob.execute();

        // Reset the flag
        deleteByQueryCalled = false;

        String result2 = purgeDocJob.execute();

        // Assert both executions were successful
        assertEquals("", result1);
        assertEquals("", result2);
        assertTrue(deleteByQueryCalled);
    }

    @Test
    public void test_execute_withEmptyIndexName() {

$ echo "Hello $Env:MY_NAME"

Hello Wade Wilson
```

</div>

////

## Lire des variables d'environnement en Python { #read-env-vars-in-python }

Vous pouvez également créer des variables d'environnement **en dehors** de Python, dans le terminal (ou par tout autre moyen), puis les **lire en Python**.

Par exemple, vous pouvez avoir un fichier `main.py` contenant :

```Python hl_lines="3"
import os