////

In this case, the function parameter `q` will be optional, and will be `None` by default.

/// check

Also notice that **FastAPI** is smart enough to notice that the path parameter `item_id` is a path parameter and `q` is not, so, it's a query parameter.

///

## Query parameter type conversion

You can also declare `bool` types, and they will be converted:

//// tab | Python 3.10+

```Python hl_lines="7"

  private fun removeOldestEntry(): Boolean {
    for (toEvict in lruEntries.values) {
      if (!toEvict.zombie) {
        removeEntry(toEvict)
        return true
      }
    }
    return false
  }

  /**
   * Closes the cache and deletes all of its stored values. This will delete all files in the cache

  /** Returns a possibly-empty list of certificates that identify this peer. */
  @get:JvmName("localCertificates") val localCertificates: List<Certificate>,
  // Delayed provider of peerCertificates, to allow lazy cleaning.
  peerCertificatesFn: () -> List<Certificate>,
) {
  /** Returns a possibly-empty list of certificates that identify the remote peer. */
  @get:JvmName("peerCertificates")

  ).int().default(DEFAULT_TIMEOUT)

  val followRedirects: Boolean by option("-L", "--location", help = "Follow redirects").flag()

  val allowInsecure: Boolean by option("-k", "--insecure", help = "Allow connections to SSL sites without certs").flag()

  val showHeaders: Boolean by option("-i", "--include", help = "Include protocol headers in the output").flag()

# limitations under the License.

SHELL := /usr/bin/env bash

# allow optional per-repo overrides
-include Makefile.overrides.mk

# Set the environment variable BUILD_WITH_CONTAINER to use a container
# to build the repo. The only dependencies in this mode are to have make and
# docker. If you'd rather build with a local tool chain instead, you'll need to
# figure out all the tools you need in your environment to make that work.

https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false labels: {} # node-role.kubernetes.io/ingress: platform annotations: {} # kubernetes.io/ingress.class: nginx # kubernetes.io/tls-acme: "true" # kubernetes.io/ingress.allow-http: "false" # kubernetes.io/ingress.global-static-ip-name: "" # nginx.ingress.kubernetes.io/secure-backends: "true" # nginx.ingress.kubernetes.io/backend-protocol: "HTTPS" # nginx.ingress.kubernetes.io/whitelist-source-range: 0.0.0.0/0 path: / hosts:...

https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false labels: {} # node-role.kubernetes.io/ingress: platform annotations: {} # kubernetes.io/ingress.class: nginx # kubernetes.io/tls-acme: "true" # kubernetes.io/ingress.allow-http: "false" # kubernetes.io/ingress.global-static-ip-name: "" # nginx.ingress.kubernetes.io/secure-backends: "true" # nginx.ingress.kubernetes.io/backend-protocol: "HTTPS" # nginx.ingress.kubernetes.io/whitelist-source-range: 0.0.0.0/0 path: / hosts:...

https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false labels: {} # node-role.kubernetes.io/ingress: platform annotations: {} # kubernetes.io/ingress.class: nginx # kubernetes.io/tls-acme: "true" # kubernetes.io/ingress.allow-http: "false" # kubernetes.io/ingress.global-static-ip-name: "" # nginx.ingress.kubernetes.io/secure-backends: "true" # nginx.ingress.kubernetes.io/backend-protocol: "HTTPS" # nginx.ingress.kubernetes.io/whitelist-source-range: 0.0.0.0/0 path: / hosts:...

https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false labels: {} # node-role.kubernetes.io/ingress: platform annotations: {} # kubernetes.io/ingress.class: nginx # kubernetes.io/tls-acme: "true" # kubernetes.io/ingress.allow-http: "false" # kubernetes.io/ingress.global-static-ip-name: "" # nginx.ingress.kubernetes.io/secure-backends: "true" # nginx.ingress.kubernetes.io/backend-protocol: "HTTPS" # nginx.ingress.kubernetes.io/whitelist-source-range: 0.0.0.0/0 path: / hosts:...

https://kubernetes.io/docs/concepts/services-networking/ingress/ ## ingress: enabled: false labels: {} # node-role.kubernetes.io/ingress: platform annotations: {} # kubernetes.io/ingress.class: nginx # kubernetes.io/tls-acme: "true" # kubernetes.io/ingress.allow-http: "false" # kubernetes.io/ingress.global-static-ip-name: "" # nginx.ingress.kubernetes.io/secure-backends: "true" # nginx.ingress.kubernetes.io/backend-protocol: "HTTPS" # nginx.ingress.kubernetes.io/whitelist-source-range: 0.0.0.0/0 path: / hosts:...