报：format() takes at most 2 arguments 在网上找，看到有人解释，按这位博主方法更改，果然有效 之前是按python2创建类，Person（object）如上类名Person括号后加了object,python3中将object去掉即可

class Person():    def __init__(self,name,age,gender):        self.name=name        self.age=age        self.gender=gender    def kanchai(self):        print("{0},{1},{2},喜欢上山去砍柴".format(self.name,self.age,self.gender))Per=Person(u'小明','10岁','男')Per.kanchai()