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# coding:utf-8

class Parent():
    def __init__(self,name,sex):
        self.name = name
        self.sex = sex
    def talk(self):
        return f'{self.name}are walking'
    def is_sex(self):
        if self.sex == 'boy':
            return f'{self.name} is a boy'
        else:
            return f'{self.name} is a gril'

class ChildOne(Parent):
    def play_football(self):
        return f'{self.name} are playing football'
class ChildTwo(Parent):
    def play_pingpong(self):
        return f'{self.name} are playing pingpong'

c_one = ChildOne(name='小木',sex='boy')
result = c_one.play_football()
result = c_one.talk()
print(result)

c_two = ChildTwo(name='小云',sex='girl')
result = c_two.play_pingpong()
print(result)

p = Parent(name='小木爸爸',sex='boy')
result = p.talk()
print(result)
result = p.is_sex()
print(result)