json := jsoniter.ConfigCompatibleWithStandardLibrary
	v, err := json.Marshal(b)
	if err != nil {
		bugLogIf(context.Background(), err) // Unlikely
		return nil
	}
	return map[string]string{fmt.Sprintf("%s-metacache-part-%d", ReservedMetadataPrefixLower, b.n): string(v)}
}

// pastPrefix returns true if the given prefix is before start of the block.
func (b metacacheBlock) pastPrefix(prefix string) bool {

   Route to host "productpage2" with weight 20%
   Route to host "productpage3" with weight 50%
   Match: /prefix*
`,
		},
	}

	for i, c := range cases {
		t.Run(fmt.Sprintf("case %d %s", i, strings.Join(c.args, " ")), func(t *testing.T) {
			verifyExecAndK8sConfigTestCaseTestOutput(t, c)
		})
	}
}

func TestGetRevisionFromPodAnnotation(t *testing.T) {
	cases := []struct {

supports both synchronous blocking calls and async calls with callbacks.


Get a URL
---------

This program downloads a URL and prints its contents as a string. [Full source][get_example].

```java
OkHttpClient client = new OkHttpClient();

String run(String url) throws IOException {
  Request request = new Request.Builder()
      .url(url)

				return nil
			}

			for typ, data := range data {
				// zip writer only handles one concurrent write
				writeMu.Lock()
				profilingDataFound = true
				err := embedFileInZip(zipWriter, fmt.Sprintf("profile-%s-%s", client.host.String(), typ), data, 0o600)
				writeMu.Unlock()
				if err != nil {
					reqInfo := (&logger.ReqInfo{}).AppendTags("peerAddress", client.host.String())

# If we are not using the default, assume its private and we need to authenticate
if [[ "${ISTIO_ENVOY_BASE_URL}" != "https://storage.googleapis.com/istio-build/proxy" ]]; then
  AUTH_HEADER="Authorization: Bearer $(gcloud auth print-access-token)"
  export AUTH_HEADER
fi

SIDECAR="${SIDECAR:-envoy}"

# OS-neutral vars. These currently only work for linux.
ISTIO_ENVOY_VERSION="${ISTIO_ENVOY_VERSION:-${PROXY_REPO_SHA}}"

Je kunt bijvoorbeeld een bestand `main.py` hebben met:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip

For example you could have a file `main.py` with:

```Python hl_lines="3"
import os

name = os.getenv("MY_NAME", "World")
print(f"Hello {name} from Python")
```

/// tip

The second argument to <a href="https://docs.python.org/3.8/library/os.html#os.getenv" class="external-link" target="_blank">`os.getenv()`</a> is the default value to return.

```Python
with open("./somefile.txt") as f:
    contents = f.read()
    print(contents)
```

🔘, `open("./somefile.txt")` ✍ 🎚 👈 🤙 "🔑 👨‍💼".

🕐❔ `with` 🍫 🏁, ⚫️ ⚒ 💭 🔐 📁, 🚥 📤 ⚠.

🕐❔ 👆 ✍ 🔗 ⏮️ `yield`, **FastAPI** 🔜 🔘 🗜 ⚫️ 🔑 👨‍💼, & 🌀 ⚫️ ⏮️ 🎏 🔗 🧰.

"minio.deployment.apiVersion" -}} {{- if semverCompare "<1.9-0" .Capabilities.KubeVersion.Version -}} {{- print "apps/v1beta2" -}} {{- else -}} {{- print "apps/v1" -}} {{- end -}} {{- end -}} {{/* Return the appropriate apiVersion for statefulset. */}} {{- define "minio.statefulset.apiVersion" -}} {{- if semverCompare "<1.16-0" .Capabilities.KubeVersion.Version -}} {{- print "apps/v1beta2" -}} {{- else -}} {{- print "apps/v1" -}} {{- end -}} {{- end -}} {{/* Return the appropriate apiVersion for ingress. */}}...

"minio.deployment.apiVersion" -}} {{- if semverCompare "<1.9-0" .Capabilities.KubeVersion.Version -}} {{- print "apps/v1beta2" -}} {{- else -}} {{- print "apps/v1" -}} {{- end -}} {{- end -}} {{/* Return the appropriate apiVersion for statefulset. */}} {{- define "minio.statefulset.apiVersion" -}} {{- if semverCompare "<1.16-0" .Capabilities.KubeVersion.Version -}} {{- print "apps/v1beta2" -}} {{- else -}} {{- print "apps/v1" -}} {{- end -}} {{- end -}} {{/* Return the appropriate apiVersion for ingress. */}}...