1 >>> class Athlete: 2 def __init__ (self,a_name,a_dob=None,a_times=[]) : 3 self.name = a_name 4 self.dob = a_dob 5 self.times = a_times 6 7 8 >>> sarah =Athlete('Sarah Sweeney','2002-6-27',['2.65','2:56','1.45']) 9 >>> james = Athlete('James Jone')
1、__init__ 左右各是两个小短下划线_ _
2、 def (空格) __init__ (self) : 没有空格会提示语法错误。