82 lines
1.9 KiB
Python
82 lines
1.9 KiB
Python
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"""
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对象之间的依赖关系和运算符重载
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Version: 0.1
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Author: 骆昊
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Date: 2018-03-12
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"""
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class Car(object):
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def __init__(self, brand, max_speed):
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self._brand = brand
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self._max_speed = max_speed
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self._current_speed = 0
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@property
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def brand(self):
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return self._brand
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def accelerate(self, delta):
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self._current_speed += delta
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if self._current_speed > self._max_speed:
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self._current_speed = self._max_speed
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def brake(self):
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self._current_speed = 0
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def __str__(self):
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return '%s当前时速%d' % (self._brand, self._current_speed)
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class Student(object):
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def __init__(self, name, age):
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self._name = name
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self._age = age
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@property
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def name(self):
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return self._name
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# 学生和车之间存在依赖关系 - 学生使用了汽车
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def drive(self, car):
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print('%s驾驶着%s欢快的行驶在去西天的路上' % (self._name, car._brand))
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car.accelerate(30)
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print(car)
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car.accelerate(50)
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print(car)
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car.accelerate(50)
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print(car)
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def study(self, course_name):
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print('%s正在学习%s.' % (self._name, course_name))
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def watch_av(self):
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if self._age < 18:
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print('%s只能观看《熊出没》.' % self._name)
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else:
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print('%s正在观看岛国爱情动作片.' % self._name)
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# 重载大于(>)运算符
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def __gt__(self, other):
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return self._age > other._age
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# 重载小于(<)运算符
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def __lt__(self, other):
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return self._age < other._age
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if __name__ == '__main__':
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stu1 = Student('骆昊', 38)
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stu1.study('Python程序设计')
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stu1.watch_av()
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stu2 = Student('王大锤', 15)
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stu2.study('思想品德')
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stu2.watch_av()
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car = Car('QQ', 120)
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stu2.drive(car)
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print(stu1 > stu2)
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print(stu1 < stu2)
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