import subprocess
import json

def get_namespaces():
    output = subprocess.check_output(["kubectl", "get", "ns", "-o", "json"])
    data = json.loads(output)
    return [item["metadata"]["name"] for item in data["items"]]

def get_pvcs(namespace: str):
    output = subprocess.check_output(["kubectl", "get", "pvc", "-n", namespace, "-o", "json"])
    data = json.loads(output)
    return [item["metadata"]["name"] for item in data["items"]]