Então usamos uma importação relativa com `..` para as dependências:

{* ../../docs_src/bigger_applications/app_an_py310/routers/items.py hl[3] title["app/routers/items.py"] *}

#### Como funcionam as importações relativas { #how-relative-imports-work }

/// tip | Dica

Se você sabe perfeitamente como funcionam as importações, continue para a próxima seção abaixo.

///

Um único ponto `.`, como em:

```Python

        QueryBuilder result = builder.apply("title", 3.0f);
        assertNotNull(result);
    }

    /**
     * Test that convertWithFieldCheck() pattern reduces code duplication.
     * This test demonstrates how the template method can be used to replace
     * repetitive field checking logic.
     */
    @Test
    public void test_convertWithFieldCheck_reducesCodeDuplication() {

    SUBMULTISET,
    DESCENDING;

    @Override
    public Set<Feature<? super Void>> getImpliedFeatures() {
      return emptySet();
    }
  }

  /** Two bounds (from and to) define how to build a subMultiset. */
  enum Bound {
    INCLUSIVE,
    EXCLUSIVE,
    NO_BOUND;
  }

  List<TestSuite> createDerivedSuites(SortedMultisetTestSuiteBuilder<E> parentBuilder) {

 *   <li>The documentation style for testcases is to provide as javadoc a simple sentence or two
 *       describing the property that the testcase method purports to test. The javadocs do not say
 *       anything about how the property is tested. To find out, read the code.
 *   <li>These tests are "conformance tests", and do not attempt to test throughput, latency,

Але заощадимо вам час на читання всієї довгої специфікації, щоб знайти лише потрібні дрібниці.

Скористаймося інструментами, які надає **FastAPI**, щоб обробляти безпеку.

## Як це виглядає { #how-it-looks }

Спочатку просто запустімо код і подивімося, як він працює, а потім повернемося, щоб розібратися, що відбувається.

## Створіть `main.py` { #create-main-py }

Скопіюйте приклад у файл `main.py`:

	//
	// The MSDN docs appear to say that a normal path that is 248 bytes long
	// will work; empirically the path must be less then 248 bytes long.
	if len(path) < 248 {
		// Don't fix. (This is how Go 1.7 and earlier worked,
		// not automatically generating the \\?\ form)
		return path
	}

	// The extended form begins with \\?\, as in
	// \\?\c:\windows\foo.txt or \\?\UNC\server\share\foo.txt.

  private static final ImmutableSet<String> VALID_NAME =
      ImmutableSet.of(
          // keep-sorted start
          "123.cn",
          "8server.shop",
          "a" + DELTA + "b.com",
          "abc.a23",
          "biz.com.ua",
          "f--1.com",
          "f--o",
          "f-_-o.cOM",
          "f11-1.com",
          "fOo",
          "f_a",

	// WorkerMinLimit min number of workers per node for "slow" mode
	WorkerMinLimit = 50

	// WorkerAutoDefault is default number of workers for "auto" mode
	WorkerAutoDefault = 100

	// MRFWorkerMaxLimit max number of mrf workers per node for "fast" mode
	MRFWorkerMaxLimit = 8

	// MRFWorkerMinLimit min number of mrf workers per node for "slow" mode
	MRFWorkerMinLimit = 2

Best practice is to set conventions in a plugin (2). This keeps the underlying object "dumb", so it can be reused in multiple contexts and doesn't contain any special information about how conventions are calculated or what they could be.  In the wild, we've seen some objects set conventions in the object's constructor (3), but this can lead to unexpected assumptions or coupling between plugins.

    if (header.matches("\\d+".toRegex())) {
      return Integer.valueOf(header)
    }
    return Integer.MAX_VALUE
  }

  companion object {
    /**
     * How many redirects and auth challenges should we attempt? Chrome follows 21 redirects; Firefox,
     * curl, and wget follow 20; Safari follows 16; and HTTP/1.0 recommends 5.
     */
    private const val MAX_FOLLOW_UPS = 20
  }