import requests

r = requests.get('http://localhost:8000/api/templates')
data = r.json()
print(f'总数: {len(data)}')
if data:
    print(f'字段: {list(data[0].keys())}')
    print(f'示例: {data[0]["id"]}, {data[0]["machine_model"]}, {data[0]["template_type"]}')
    print(f'有second_key字段: {"second_key" in data[0]}')