In that case, you can simply swap the standard `dataclasses` with `pydantic.dataclasses`, which is a drop-in replacement:

{* ../../docs_src/dataclasses/tutorial003.py hl[1,5,8:11,14:17,23:25,28] *}

1. We still import `field` from standard `dataclasses`.

2. `pydantic.dataclasses` is a drop-in replacement for `dataclasses`.

3. The `Author` dataclass includes a list of `Item` dataclasses.

    }


def test_create_item_bad_token():
    response = client.post(
        "/items/",
        headers={"X-Token": "hailhydra"},
        json={"id": "bazz", "title": "Bazz", "description": "Drop the bazz"},
    )
    assert response.status_code == 400
    assert response.json() == {"detail": "Invalid X-Token header"}


def test_create_existing_item():
    response = client.post(
        "/items/",

    }


def test_create_item_bad_token():
    response = client.post(
        "/items/",
        headers={"X-Token": "hailhydra"},
        json={"id": "bazz", "title": "Bazz", "description": "Drop the bazz"},
    )
    assert response.status_code == 400
    assert response.json() == {"detail": "Invalid X-Token header"}


def test_create_existing_item():
    response = client.post(
        "/items/",

    <version>2.1.34</version>
</dependency>
```

## Changes

 * SMB2 (2.02 protocol level) support, some SMB3 support
 * Remove global state
 * Allow per context configuration
 * Logging through SLF4J
 * Drop pre-java 1.7 support
 * Unify authentication subsystem, NTLMSSP/Kerberos support
 * Large ReadX/WriteX support
 * Streaming list operations
 * NtTransNotifyChange support

		t.Fatalf("Failed to drop view, got %v", err)
	}

	query = DB.Model(&User{}).Where("age > ?", 20)
	if err := DB.Migrator().CreateView("users_view", gorm.ViewOption{Query: query}); err != nil {
		t.Fatalf("Failed to crate view, got %v", err)
	}
	if err := DB.Migrator().DropView("users_view"); err != nil {
		t.Fatalf("Failed to drop view, got %v", err)
	}
}

}

class IanaSuites(
  val name: String,
  val suites: List<SuiteId>,
) {
  fun fromJavaName(javaName: String): SuiteId {
    return suites.firstOrNull {
      it.name == javaName || it.name == "TLS_${javaName.drop(4)}"
    } ?: throw IllegalArgumentException("No such suite: $javaName")
  }
}

suspend fun fetchIanaSuites(okHttpClient: OkHttpClient): IanaSuites {

    }


def test_create_item_bad_token():
    response = client.post(
        "/items/",
        headers={"X-Token": "hailhydra"},
        json={"id": "bazz", "title": "Bazz", "description": "Drop the bazz"},
    )
    assert response.status_code == 400
    assert response.json() == {"detail": "Invalid X-Token header"}


def test_create_existing_item():
    response = client.post(
        "/items/",

    }


def test_create_item_bad_token():
    response = client.post(
        "/items/",
        headers={"X-Token": "hailhydra"},
        json={"id": "bazz", "title": "Bazz", "description": "Drop the bazz"},
    )
    assert response.status_code == 400
    assert response.json() == {"detail": "Invalid X-Token header"}


def test_create_existing_item():
    response = client.post(
        "/items/",

		},
		{
			name:        "invalid-drop",
			annotations: map[string]string{annotation.SidecarStatus.Name: "true"},
			proxyEnv:    []corev1.EnvVar{{Name: cmd.InvalidDropByIptables, Value: "true"}},
			golden:      filepath.Join(env.IstioSrc, "cni/pkg/plugin/testdata/invalid-drop.txt.golden"),
		},
		{
			name:        "custom-uid",

        // No mutations should be possible after this point
        if (allAddresses.isEmpty()) {
          val first = allExceptions.firstOrNull() ?: UnknownHostException("No results for $hostname")

          allExceptions.drop(1).forEach {
            first.addSuppressed(it)
          }

          throw first
        }

        allAddresses
      }
  }