1 class B:
2 def __init__(self,name,sex):
3 self.name = name
4 self.sex = sex
5 a = B("yangtuo","tiancai")
6 b = B("yangtuo","tiancai")
7 # 默认是哈希内存地址
8 print(a) # <__main__.B object at 0x000000000251D240>
9 print(b) # <__main__.B object at 0x000000000251D4E0>
10 print(hash(a)==hash(b)) # False
11 class A:
12 def __init__(self,name,sex):
13 self.name = name
14 self.sex = sex
15 def __hash__(self):
16 return hash(self.name + self.sex)
17 a = A("suyang","猪")
18 b = A("suyang","猪")
19 print(hash(a)) # -7714351582186626821
20 print(hash(b)) # -7714351582186626821
21 print(hash(a)==hash(b)) # True