repr_str方法

 1 class School:
 2 
 3     def __init__(self,name,addr,type):
 4         self.name = name
 5         self.addr = addr
 6         self.type = type
 7 
 8     #改变字符串的显示格式
 9     def __repr__(self):
10         return ‘School(%s,%s)‘ % (self.name,self.addr)
11 
12     def __str__(self):
13         return ‘(%s,%s)‘ % (self.name,self.addr)
14 
15 
16 s1 = School(‘小猿圈‘,‘北京‘,‘私立‘)
17 print(‘from repr:‘,repr(s1))
18 print(‘from str:‘,str(s1))
19 print(s1)