-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathelectric_car.py
More file actions
42 lines (34 loc) · 1.29 KB
/
Copy pathelectric_car.py
File metadata and controls
42 lines (34 loc) · 1.29 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
"""
一组用于表示电动汽车的类
"""
from car import Car
class Battery():
"""模拟电动汽车的电瓶"""
def __init__(self, battery_size=20):
"""初始化电瓶属性"""
self.battery_size = battery_size
def describe_battery(self):
"""打印一条描述电瓶容量的消息"""
print("This car has a " + str(self.battery_size) + " -kWh battery.")
def update_battery(self, battery):
"""更新电瓶的容量"""
self.battery_size = battery
def get_range(self):
"""打印一条描述电瓶续航里程的消息"""
# 要有这个初始值，否则变量ranges会在没有定义的情况下被引用而报错
ranges = 100
if self.battery_size == 70:
ranges = 240
elif self.battery_size == 85:
ranges = 270
message = "This car can go approximately " + str(ranges)
message += " miles on a full charge."
print(message)
class ElectricCar(Car):
"""模拟电动汽车的独特之处"""
def __init__(self, elec_make, elec_model, elec_year):
"""
初始化父类的属性， 再初始化电动汽车特有的属性
"""
super().__init__(elec_make, elec_model, elec_year)
self.battery = Battery()