from pydantic import BaseModel

class Item(BaseModel):
    name: str
    price: Optional[float] = None
    owner_ids: Optional[List[int]] = None

app = FastAPI()

@app.get("/items/invalidnone", response_model=Union[Item, None])
def get_invalid_none():
    return None
```

  // that are not part of the Kubernetes system.
  // +optional
  repeated string externalIPs = 5;

  // Supports "ClientIP" and "None". Used to maintain session affinity.
  // Enable client IP based session affinity.
  // Must be ClientIP or None.
  // Defaults to None.
  // More info: https://kubernetes.io/docs/concepts/services-networking/service/#virtual-ips-and-service-proxies
  // +optional

 public abstract interface Categories$ExcludeCategory extends annotation.Annotation { public abstract Class[] value(); public abstract boolean matchAny(); } org/junit/Test$None.class package org.junit; public synchronized class Test$None extends Throwable { private static final long serialVersionUID = 1; private void Test$None(); } org/junit/TestCouldNotBeSkippe.class package org.junit; public synchronized class TestCouldNotBeSkippe extends RuntimeException { private static final long serialVersionUID...

    * --alpha-endpoint-reconciler-type=(master-count, lease, none) (default
    * "master-count"). The original reconciler is 'master-count'. The 'lease'
    * reconciler uses the storageapi and a TTL to keep alive an endpoint within the
    * `kube-apiserver-endpoint` storage namespace. The 'none' reconciler is a noop
    * reconciler that does not do anything. This is useful for self-hosted

* Default mount propagation has changed from "HostToContainer" ("rslave" in Linux terminology) to "None" ("private") to match the behavior in 1.9 and earlier releases. "HostToContainer" as a default caused regressions in some pods. ([#62462](https://github.com/kubernetes/kubernetes/pull/62462), [@jsafrane](https://github.com/jsafrane))

pkg syscall (darwin-arm64), const IPPROTO_NHRP = 54
pkg syscall (darwin-arm64), const IPPROTO_NHRP ideal-int
pkg syscall (darwin-arm64), const IPPROTO_NONE = 59
pkg syscall (darwin-arm64), const IPPROTO_NONE ideal-int
pkg syscall (darwin-arm64), const IPPROTO_NSP = 31
pkg syscall (darwin-arm64), const IPPROTO_NSP ideal-int
pkg syscall (darwin-arm64), const IPPROTO_NVPII = 11

pkg syscall (netbsd-arm64-cgo), const IPPROTO_MOBILE = 55
pkg syscall (netbsd-arm64-cgo), const IPPROTO_MOBILE ideal-int
pkg syscall (netbsd-arm64-cgo), const IPPROTO_NONE = 59
pkg syscall (netbsd-arm64-cgo), const IPPROTO_NONE ideal-int
pkg syscall (netbsd-arm64-cgo), const IPPROTO_PFSYNC = 240
pkg syscall (netbsd-arm64-cgo), const IPPROTO_PFSYNC ideal-int
pkg syscall (netbsd-arm64-cgo), const IPPROTO_PIM = 103

- NONE ([#124326](https://github.com/kubernetes/kubernetes/pull/124326), [@ritazh](https://github.com/ritazh)) [SIG Auth]

#### kubectl:
- the boolean and unset values for the --dry-run flag are deprecated and a value --dry-run=server|client|none will be required in a future version. ([#87580](https://github.com/kubernetes/kubernetes/pull/87580), [@julianvmodesto](https://github.com/julianvmodesto)) [SIG CLI]

- Migrate pkg/kubelet/cm/cpumanage/{topology/togit pology.go, policy_none.go, cpu_assignment.go} to structured logging ([#100163](https://github.com/kubernetes/kubernetes/pull/100163), [@lala123912](https://github.com/lala123912)) [SIG Instrumentation and Node]