求帮找代码异常打印输出
# Enter a code
class Person(object):
def __init__(self, name, gender):
self.name = name
self.gender = gender
def who(self):
return 'I am a Person, my name is %s' % self.name
class Student(Person):
def __init__(self, name, gender, score):
super(Student, self).__init__(name, gender)
self.score = score
def who(self):
return 'I am a Student, my score is %s' % self.score
class Teacher(Person):
def __init__(self, name, gender, course):
super(Teacher, self).__init__(name, gender)
self.course = course
def who(self):
return 'I am a Teacher,teching %s'%self.course
class SkillMixin(object):
def __init__(self):
pass
def get_skill(self):
print('I hava a skill')
class BasketballSkillMixin(SkillMixin):
def __init__(self):
super(BasketballSkillMixin,self).__init__()
self.skill='basketball'
def get_skill(self):
print('I hava a %s skill'%self.skill)
class FootballSkillMixin(SkillMixin):
def __init__(self):
super(FootballSkillMixin,self).__init__()
self.skill='football'
def get_skill(self):
print('I hava a %s skill'%self.skill)
class MyBasketStudent(BasketballSkillMixin,Student):
def __init__(self,name,gender,score):
Student.__init__(self,name,gender,score)
BasketballSkillMixin.__init__(self)
class MyFootballTeacher(FootballSkillMixin,Teacher):
def __init__(self,name,gender,course):
Teacher.__init__(self,name,gender,course)
FootballSkillMixin.__init__(self)
a=MyBasketStudent('xiaoming','man',98)
print(a.who())
print(a.get_skill())
# b=MyFootballTeacher('lixing','man','physical')
# print(b.who())
# print(b.get_skill())
疑问：为啥最后一行多打印了一个None?
