萌新求助，望大佬帮忙
class Car():def __init__(self,brand,size):
self.brand=brand
self.size=size
self.mile=0
def name(self):
name=self.brand.title()+' '+self.size.title()
print(name)
def miles(self):
print("This car has "+str(self.mile)+' on it.')
def changing_miles(self,miles):
miles=int(miles)
if miles>=0:
self.mile+=miles
print("Now,This car has "+str(self.mile)+' on it.')
else:
print("You can't roll back an odometer!")
#这是之前的一个类
from car import Car
class ElectricCar():
def __init__ (self,brand,size):
super(). __init__ (brand,size)
self.battery=100
self.rm=100
def battery(self):
print('The electric capacity of electric vehicles is: '+self.battery)
def rm(self):
print('The estimated remaining mileage of electric vehicle is: '+self.rm)
def running(self,C):
C=int(C)
self.miles+=C
self.rm-=C
self.battery-=(0.1)*C
my_new_car=ElectricCar('Tesla','Model S')
my_new_car.running(55)
my_new_car.rm()
my_new_car.battery()
#运行之后pyhton就报错
Traceback (most recent call last):
File "Electriccar.py", line 21, in <module>
my_new_car=ElectricCar('Tesla','Model S')
File "Electriccar.py", line 5, in __init__
super(). __init__ (brand,size)
TypeError: object.__init__() takes exactly one argument (the instance to initialize)
求大佬赐教[拜谢] 要继承自 Car 类
from car import Car
class ElectricCar(Car):
def __init__(self, brand, size):
super().__init__(brand, size)
self.battery = 100
self.rm = 100
def battery(self):
print('The electric capacity of electric vehicles is: ' + self.battery)
def rm(self):
print('The estimated remaining mileage of electric vehicle is: ' + self.rm)
def running(self, C):
C = int(C)
self.miles += C
self.rm -= C
self.battery -= (0.1) * C
my_new_car = ElectricCar('Tesla', 'Model S')
my_new_car.running(55)
my_new_car.rm()
my_new_car.battery()
你这里 ElectricCar() 类中的 super(). __init__ (brand,size) 是错误的，因为你 ElectricCar() 没有设置继承，那么默认继承 object 类
但是 object 类的 __init__ 方法没有设置传入参数，而你传入了 brand,size 两个参数导致报错
第二个代码应该是想继承 Car 类吧，而且你的 running 方法中的 mile 参数不小心多加了个 s ，应该去掉
你的变量名和类中的函数名相同，导致函数被变量覆盖，你就不能直接调用 rm() 和 battery() 了
而且字符串和整型不能直接进行 + 法操作，应该将两个方法的 print 改成：+ str(self.battery) 和 + (self.rm)
参考代码：
from car import Car
class ElectricCar(Car):
def __init__(self, brand, size):
super().__init__(brand, size)
self.battery = 100
self.rm = 100
def battery_(self):
print('The electric capacity of electric vehicles is: ' + str(self.battery))
def rm_(self):
print('The estimated remaining mileage of electric vehicle is: ' + str(self.rm))
def running(self, C):
C = int(C)
self.mile += C
self.rm -= C
self.battery -= (0.1) * C
my_new_car = ElectricCar('Tesla', 'Model S')
my_new_car.running(55)
my_new_car.rm_()
my_new_car.battery_() 谢谢大佬指教，现在代码可以运行了
页:
[1]