次に、このPythonプログラムを呼び出します。

//// tab | Linux, macOS, Windows Bash

<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

---

Але якщо Вам цікаво розібратися в цьому конкретному прикладі коду і Вам ще не набридло, ось кілька додаткових деталей.

#### Рядок із `value.startswith()`

Звернули увагу? Рядок із `value.startswith()` може приймати кортеж, і тоді він перевірятиме кожне значення в кортежі:

{* ../../docs_src/query_params_str_validations/tutorial015_an_py310.py ln[16:19] hl[17] *}

	xlMeta.Erasure.Checksums = make([]ChecksumInfo, totalParts)
	// total number of parts.
	xlMeta.Parts = make([]ObjectPartInfo, totalParts)
	for i := range totalParts {
		// hard coding hash and algo value for the checksum, Since we are benchmarking the parsing of xl.meta the magnitude doesn't affect the test,
		// The magnitude doesn't make a difference, only the size does.

	ctx := context.Background()

	name := "GenericsExec"
	if err := gorm.G[User](DB).Exec(ctx, "INSERT INTO users(name) VALUES(?)", name); err != nil {
		t.Fatalf("Exec insert failed: %v", err)
	}

	name2 := "GenericsExec2"
	if err := gorm.G[User](DB).Exec(ctx, "INSERT INTO ?(name) VALUES(?)", clause.Table{Name: clause.CurrentTable}, name2); err != nil {
		t.Fatalf("Exec insert failed: %v", err)
	}

CommandLineParser$OptionParserState { public final CommandLineParser$OptionString optionString; public final CommandLineOption option; public final ParsedCommandLine commandLine; public final CommandLineParser$ParserState state; public final java.util.ArrayList values; public void CommandLineParser$KnownOptionParserSta(CommandLineParser$OptionString, CommandLineOption, ParsedCommandLine, CommandLineParser$ParserState); public final CommandLineParser$ParserState onArgument(String); public final CommandLineParser$ParserState...

			t.Errorf("Test %d: %s: Expected to fail with error \"%v\", but instead failed with error \"%v\" instead.", i, instanceType, testCase.expectedError, actualErr)
			continue
		}
		// Test passes as expected, but the output values are verified for correctness here.
		if actualErr == nil {
			// Asserting whether the md5 output is correct.
			if expectedMD5, ok := testCase.inputMeta["etag"]; ok && expectedMD5 != objInfo.ETag {

   * com.google.common.collect.testing.testers.AbstractListTester AbstractListTester}, a call to
   * {@code expectContents()} invokes this version</strong>.
   *
   * @param expected expected value of {@link #container}
   */
  /*
   * TODO: improve this and other implementations and move out of this framework
   * for wider use
   *

        assertEquals(0x400000, Smb2CreateRequest.FILE_NOP_RECALL);
        assertEquals(0x800000, Smb2CreateRequest.FILE_OPEN_FOR_FREE_SPACE_QUERY);
    }

    @Test
    @DisplayName("Test default values after construction")
    void testDefaultValues() {
        request = new Smb2CreateRequest(mockConfig, "test.txt");

        byte[] buffer = new byte[1024];
        request.writeBytesWireFormat(buffer, 0);

///

### Step 5: return the content { #step-5-return-the-content }

{* ../../docs_src/first_steps/tutorial001.py hl[8] *}

You can return a `dict`, `list`, singular values as `str`, `int`, etc.

You can also return Pydantic models (you'll see more about that later).

    transformer.setMaxContentSize(10 * 1024 * 1024); // 10MB limit
});
```

## Troubleshooting

### Common Issues

#### Connection Timeouts
```java
// Increase timeout values
client.setConnectionTimeout(60000);  // 60 seconds
client.setSocketTimeout(120000);     // 120 seconds
```

#### Memory Issues
```java
// Reduce concurrent threads and batch sizes