class Vehicle:
def __init__(self, number_of_wheels, type_of_tank, seating_capacity, maximum_velocity):
self.number_of_wheels = number_of_wheels
self.type_of_tank = type_of_tank
self.seating_capacity = seating_capacity
self.maximum_velocity = maximum_velocity
@property
def number_of_wheels(self):
return self.number_of_wheels
@number_of_wheels.setter
def number_of_wheels(number):
self.number_of_wheels = number
def make_noise(self):
print('VRUUUUUUUM')
tesla_model_s = Vehicle(4, 'electric', 5, 250)
print('number of wheels',tesla_model_s.number_of_wheels) # 4
tesla_model_s.number_of_wheels = 2 # setting number of wheels to 2
print('updated number of wheels',tesla_model_s.number_of_wheels) # 2
tesla_model_s.make_noise() # VRUUUUUUUM
运行此代码时出现以下错误,我认为可能是由于getter和setter所致。谁能帮我解决这个问题。
Traceback (most recent call last):
File "classes.py", line 23, in <module>
tesla_model_s.make_noise() # VRUUUUUUUM
AttributeError: Vehicle instance has no attribute 'make_noise'