动态映射对象中所有类型的函数

class Device:
    def start(self):
        raise NotImplementedError

class Light(Device):
    def start(self):
        print("Light is starting")

class Fan(Device):
    def start(self):
        print("Fan is starting")

# 动态映射
device_map = {
    'Light': Light().start,
    'Fan': Fan().start
}

def start_device(device_type):
    if device_type in device_map:
        device_map[device_type]()
    else:
        print(f"No start method found for device type: {device_type}")

# 使用
start_device('Light')  # 输出: Light is starting
start_device('Fan')    # 输出: Fan is starting

def start_device(device_type):
    try:
        if device_type in device_map:
            device_map[device_type]()
        else:
            print(f"No start method found for device type: {device_type}")
    except Exception as e:
        print(f"Error starting device: {e}")