### 使用 `Annotated` 更好 { #better-with-annotated }

記住，如果你使用 `Annotated`，因為不是用函式參數預設值，所以你不會遇到這個問題，也可能不需要使用 `*`。

{* ../../docs_src/path_params_numeric_validations/tutorial003_an_py310.py hl[10] *}

## 數值驗證：大於或等於 { #number-validations-greater-than-or-equal }

使用 `Query` 和 `Path`（以及你之後會看到的其他類別）可以宣告數值限制。

這裡用 `ge=1`，代表 `item_id` 必須是「大於（`g`reater）或等於（`e`qual）」`1` 的整數。

/// info | Bilgi

Aşağıda göreceğiniz gibi, bu davranış 0.106.0 sürümünden önceki davranışa oldukça benzer; ancak köşe durumlar için çeşitli iyileştirmeler ve bug fix'ler içerir.

///

#### Erken Çıkış Kodu için Kullanım Senaryoları { #use-cases-with-early-exit-code }

0.082 responseBodyStart
0.082 responseBodyEnd
0.083 connectionReleased
0.083 callEnd
```

Notice how no connect events are fired for the second call. It reused the connection from the first request for dramatically better performance.

### EventListener.Factory

   *
   * @throws IllegalArgumentException if the resource is not found
   */
  @CanIgnoreReturnValue // being used to check if a resource exists
  // TODO(cgdecker): maybe add a better way to check if a resource exists
  // e.g. Optional<URL> tryGetResource or boolean resourceExists
  public static URL getResource(String resourceName) {
    ClassLoader loader =
        MoreObjects.firstNonNull(

{* ../../docs_src/path_params_numeric_validations/tutorial004_an_py310.py hl[10] *}

## Валидация числовых данных: больше и меньше или равно { #number-validations-greater-than-and-less-than-or-equal }

То же самое применимо к:

* `gt`: больше (`g`reater `t`han)
* `le`: меньше или равно (`l`ess than or `e`qual)

# Virtual Environments { #virtual-environments }

Python projeleriyle çalışırken, her proje için kurduğunuz package'leri birbirinden izole etmek adına büyük ihtimalle bir **virtual environment** (veya benzer bir mekanizma) kullanmalısınız.

/// info | Bilgi

Virtual environment'leri, nasıl oluşturulduklarını ve nasıl kullanıldıklarını zaten biliyorsanız bu bölümü atlamak isteyebilirsiniz. 🤓

///

/// tip | İpucu

* Note that Javadoc and block comments i.e. `/* ... */` are not formatted,
  but line comments i.e `// ...` are.
* Negative boolean expressions must use the form `foo == false` instead of
  `!foo` for better readability of the code. This is enforced via
  Checkstyle. Conversely, you should not write e.g. `if (foo == true)`, but
  just `if (foo)`.

#### Editor / IDE Support

IntelliJ IDEs can

 * behavior</a> when multiple threads attempt concurrent mutations. Its equivalent to {@code
 * CacheBuilder} is its <a
 * href="https://www.javadoc.io/doc/com.github.ben-manes.caffeine/caffeine/latest/com.github.benmanes.caffeine/com/github/benmanes/caffeine/cache/Caffeine.html">{@code
 * Caffeine}</a> class. Caffeine offers better performance, more features (including asynchronous

     */
    public boolean isUsableForChannel() {
        return address != null && !address.isLoopbackAddress() && !address.isLinkLocalAddress();
    }

    /**
     * Get a score for interface selection (higher is better)
     *
     * @return interface score
     */
    public int getScore() {
        int score = linkSpeed; // Base score is link speed

        if (rssCapable)

The `str | None` is not used by FastAPI to determine that the value is not required, it will know it's not required because it has a default value of `= None`.

But adding the type annotations will allow your editor to give you better support and detect errors.

///

## Without Pydantic { #without-pydantic }