#类属性练习:为了统计学生人数,可以给Student类增加一个类属性,每创建一个实例,该属性自动增加: class Student(object): count = 0 def __init__(self, name): Student.count = Student.count + 1 self.name = name # 测试: if Student.count != 0: print('测试失败!') else: bart = Student('Bart') if Student.count != 1: print('测试失败!') else: lisa = Student('Bart') if Student.count != 2: print('测试失败!') else: print('Students:', Student.count) print('测试通过!')
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