from typing import List, Union

from fastapi import FastAPI
from pydantic import BaseModel


class Item(BaseModel):
    name: str
    description: Union[str, None] = None


app = FastAPI()


@app.post("/items/")
def create_item(item: Item):
    return item


@app.get("/items/")
def read_items() -> List[Item]:
    return [
        Item(
            name="Portal Gun",

 * pinning.
 */
abstract class CertificateChainCleaner {
  @Throws(SSLPeerUnverifiedException::class)
  abstract fun clean(
    chain: List<Certificate>,
    hostname: String,
  ): List<Certificate>

  companion object {
    fun get(trustManager: X509TrustManager): CertificateChainCleaner {
      return Platform.get().buildCertificateChainCleaner(trustManager)
    }

import java.util.Enumeration;
import java.util.List;
import java.util.Map;

import javax.security.auth.kerberos.KerberosKey;

import org.bouncycastle.asn1.*;

import jcifs.pac.ASN1Util;
import jcifs.pac.PACDecodingException;


@SuppressWarnings ( "javadoc" )
public class KerberosRelevantAuthData extends KerberosAuthData {

    private List<KerberosAuthData> authorizations;

import java.util.LinkedHashSet;
import java.util.List;
import java.util.Set;

import org.apache.maven.artifact.Artifact;

/**
 * Apply multiple filters.
 *
 */
public class AndArtifactFilter implements ArtifactFilter {
    private Set<ArtifactFilter> filters;

    public AndArtifactFilter() {
        this.filters = new LinkedHashSet<>();
    }

    public AndArtifactFilter(List<ArtifactFilter> filters) {

            return Optional.empty();
        }

        List<MavenProject> sortedProjects = result.getTopologicallySortedProjects();

        boolean hasNoSuccess =
                sortedProjects.stream().noneMatch(project -> result.getBuildSummary(project) instanceof BuildSuccess);

        if (hasNoSuccess) {
            return Optional.empty();
        }

        List<String> remainingProjects = sortedProjects.stream()

            }
            throw GradleException(buildErrorMessage(formattedMismatches))
        }
    }

    private
    fun findMismatches(originalChanges: List<AcceptedApiChange>, sortedChanges: List<AcceptedApiChange>): List<AcceptedApiChange> {
        return originalChanges.filterIndexed { index, acceptedApiChange -> sortedChanges[index] != acceptedApiChange }
    }

    private

from typing import List, Union

from fastapi import FastAPI, Header
from pydantic import BaseModel
from typing_extensions import Annotated

app = FastAPI()


class CommonHeaders(BaseModel):
    host: str
    save_data: bool
    if_modified_since: Union[str, None] = None
    traceparent: Union[str, None] = None
    x_tag: List[str] = []


@app.get("/items/")
async def read_items(headers: Annotated[CommonHeaders, Header()]):

from typing import List

from fastapi import FastAPI, Query
from pydantic import BaseModel, Field
from typing_extensions import Annotated, Literal

app = FastAPI()


class FilterParams(BaseModel):
    model_config = {"extra": "forbid"}

    limit: int = Field(100, gt=0, le=100)
    offset: int = Field(0, ge=0)
    order_by: Literal["created_at", "updated_at"] = "created_at"
    tags: List[str] = []


@app.get("/items/")

  "q": [
    "foo",
    "bar"
  ]
}
```

#### ⚙️ `list`

👆 💪 ⚙️ `list` 🔗 ↩️ `List[str]` (⚖️ `list[str]` 🐍 3️⃣.9️⃣ ➕):

```Python hl_lines="7"
{!../../docs_src/query_params_str_validations/tutorial013.py!}
```

/// note

✔️ 🤯 👈 👉 💼, FastAPI 🏆 🚫 ✅ 🎚 📇.

🖼, `List[int]` 🔜 ✅ (& 📄) 👈 🎚 📇 🔢. ✋️ `list` 😞 🚫🔜.

///

## 📣 🌅 🗃

👆 💪 🚮 🌅 ℹ 🔃 🔢.

                browser tabs open). Or if you want to leave fixed the possible URLs.

                If the servers `list` is not provided, or is an empty `list`, the
                default value would be a `dict` with a `url` value of `/`.

                Each item in the `list` is a `dict` containing:

                * `url`: A URL to the target host. This URL supports Server Variables