{* ../../docs_src/security/tutorial007.py hl[1,11:21] *}

👉 🔜 🎏:

```Python
if not (credentials.username == "stanleyjobson") or not (credentials.password == "swordfish"):
    # Return some error
    ...
```

✋️ ⚙️ `secrets.compare_digest()` ⚫️ 🔜 🔐 🛡 🆎 👊 🤙 "🕰 👊".

### ⏲ 👊

✋️ ⚫️❔ "⏲ 👊"❓

➡️ 🌈 👊 🔄 💭 🆔 & 🔐.

& 👫 📨 📨 ⏮️ 🆔 `johndoe` & 🔐 `love123`.

{* ../../docs_src/background_tasks/tutorial001.py hl[14] *}

`.add_task()` 📨 ❌:

* 📋 🔢 🏃 🖥 (`write_notification`).
* 🙆 🔁 ❌ 👈 🔜 🚶‍♀️ 📋 🔢 ✔ (`email`).
* 🙆 🇨🇻 ❌ 👈 🔜 🚶‍♀️ 📋 🔢 (`message="some notification"`).

## 🔗 💉

⚙️ `BackgroundTasks` 👷 ⏮️ 🔗 💉 ⚙️, 👆 💪 📣 🔢 🆎 `BackgroundTasks` 💗 🎚: *➡ 🛠️ 🔢*, 🔗 (☑), 🎧-🔗, ♒️.

**FastAPI** 💭 ⚫️❔ 🔠 💼 & ❔ 🏤-⚙️ 🎏 🎚, 👈 🌐 🖥 📋 🔗 👯‍♂️ & 🏃 🖥 ⏮️:

	"cmd/internal/src"
)

// A ScanToken represents an input item. It is a simple wrapping of rune, as
// returned by text/scanner.Scanner, plus a couple of extra values.
type ScanToken rune

const (
	// Asm defines some two-character lexemes. We make up
	// a rune/ScanToken value for them - ugly but simple.
	LSH          ScanToken = -1000 - iota // << Left shift.
	RSH                                   // >> Logical right shift.

	// This will make `test/a` and `test/b` share listings if they are concurrent.
	// Enabling this will make cache sharing more likely and cause less IO,
	// but may cause additional latency to some calls.
	metacacheSharePrefix = false
)

//go:generate msgp -file $GOFILE -unexported

// metacache contains a tracked cache entry.
type metacache struct {

    }

    @Test
    void testThroughputCalculation() {
        long initialThroughput = channelInfo.getThroughput();
        assertEquals(0, initialThroughput);

        // Add some data transfer
        channelInfo.addBytesSent(1000);
        channelInfo.addBytesReceived(2000);

        // Wait a bit to ensure time passes
        try {
            Thread.sleep(10);

        // Test potentially retriable errors
        SmbException sharingViolation = new SmbException(NtStatus.NT_STATUS_SHARING_VIOLATION, false);
        // Sharing violations might be retriable in some contexts
        // The implementation determines this
        assertNotNull(sharingViolation);
    }

    @Test
    @DisplayName("Should preserve stack trace information")

//     that gets offloaded). The same registry key setting overwrites the storage-defined setting.
//     Optional value, default 64, range: 1-unlimited
//
//   - <S3MultiObjectDeleteLimit>
//     Some of the Veeam products use Multi Delete operations. This setting can reduce how many objects are included in one
//     multi-delete operation. The same registry key setting overwrites the storage-defined setting.

        writeLittleEndianInt(baos, 0); // bufferCount = 0
        writeLittleEndianInt(baos, PacConstants.PAC_VERSION); // valid version
        baos.write(new byte[10]); // Some extra data
        byte[] pacData = baos.toByteArray();

        PACDecodingException e = assertThrows(PACDecodingException.class, () -> new Pac(pacData, keys));
        // Should indicate missing required buffers

* Une fonction de tâche à exécuter en arrière-plan (`write_notification`).
* Les arguments positionnels à passer à la fonction de tâche dans l'ordre (`email`).
* Les arguments nommés à passer à la fonction de tâche (`message="some notification"`).

## Injection de dépendances

 *
 * <p><b>Warning:</b> instances of type {@code Multimap} may not implement {@link Object#equals} in
 * the way you expect. Multimaps containing the same key-value pairs, even in the same order, may or
 * may not be equal and may or may not have the same {@code hashCode}. The recommended subinterfaces
 * provide much stronger guarantees.
 *
 * <h3>Comparison to a map of collections</h3>
 *