import json

data = {"users": [{"name": "Alice"}, {"name": "Bob"}]}
print(json.dumps(data, indent=2))

import json
from datetime import date

today = date(2025, 6, 9)

def handle(obj):
    if isinstance(obj, date):
        return obj.isoformat()
    raise TypeError("Not serializable")

print(json.dumps({"today": today}, default=handle))