```Python hl_lines="3"
import os

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

/// tip

The second argument to <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> is the default value to return.

If not provided, it's `None` by default, here we provide `"World"` as the default value to use.

///

        StringSource source = new StringSource("Hello World!");

        try (InputStream is = source.getInputStream();
                Scanner scanner = new Scanner(is)) {
            assertEquals("Hello World!", scanner.nextLine());
        }
    }

    @Test
    void testGetLocation() {
        StringSource source = new StringSource("Hello World!");
        assertEquals("(memory)", source.getLocation());

	n++
}
i := *p
*q = 1
</pre>

<p>
If <code>list</code> pointed to a cyclic list,
then the original program would never access <code>*p</code> or <code>*q</code>,
but the rewritten program would.
(Moving `*p` ahead would be safe if the compiler can prove `*p` will not panic;
moving `*q` ahead would also require the compiler proving that no other
goroutine can access `*q`.)
</p>

<p>

	text := []byte("The quick brown fox")
	fmt.Println("Split byte slice into fields:")
	for word := range bytes.FieldsSeq(text) {
		fmt.Printf("%q\n", word)
	}

	textWithSpaces := []byte("  lots   of   spaces  ")
	fmt.Println("\nSplit byte slice with multiple spaces:")
	for word := range bytes.FieldsSeq(textWithSpaces) {
		fmt.Printf("%q\n", word)
	}

	// Output:
	// Split byte slice into fields:
	// "The"
	// "quick"

    val responseString = decompressed.body.string()
    assertThat(responseString).isEqualTo("hello zstd world")
  }

  @Test
  fun testDecompressGzip() {
    val s = "hello gzip world".encodeUtf8().gzipCompress()

    val response =
      response("https://example.com/", s) {
        header("Content-Encoding", "gzip")
      }

            // Read remaining bytes
            byte[] remaining = new byte[20];
            int remainingBytes = stream.read(remaining);
            assertEquals(8, remainingBytes); // ", World!"
            assertEquals(", World!", new String(remaining, 0, remainingBytes, "UTF-8"));
        }
    }

```Python hl_lines="3"
import os

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

/// tip

آرگومان دوم <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> مقدار پیش‌فرضیه که برمی‌گردونه.

اگه ندی، به‌صورت پیش‌فرض `None` هست، اینجا ما `"World"` رو به‌عنوان مقدار پیش‌فرض گذاشتیم.

///

	Name4        string `gorm:"uniqueIndex"`
	Name5        int64  `gorm:"index:,class:FULLTEXT,comment:hello \\, world,where:age > 10"`
	Name6        int64  `gorm:"index:profile,comment:hello \\, world,where:age > 10"`
	Age          int64  `gorm:"index:profile,expression:ABS(age),option:WITH PARSER parser_name"`
	OID          int64  `gorm:"index:idx_id;index:idx_oid,unique"`

    }
  }

  @Test
  fun singlePart() {
    val expected =
      """
      |--123
      |
      |Hello, World!
      |--123--
      |
      """.trimMargin().replace("\n", "\r\n")
    val body =
      MultipartBody
        .Builder("123")
        .addPart("Hello, World!".toRequestBody(null))
        .build()
    assertThat(body.boundary).isEqualTo("123")

```txt
Hello, World from Flask!
```

Eğer <a href="http://localhost:8000/v2/" class="external-link" target="_blank">http://localhost:8000/v2/</a> adresine giderseniz, FastAPI'dan gelen yanıtı göreceksiniz:

```JSON
{
    "message": "Hello World"
}