- Python3中用于比较的魔术方法
class Person(object):
def __init__(self, name, gender, age, weight):
self.name = name
self.gender = gender
self.age = age
self.weight = weight
def __eq__(self, other):
return True if self.age == other.age and self.weight == other.weight else False
def __ne__(self, other):
return True if self.age != other.age or self.weight != other.weight else False
def __lt__(self, other): # 当程序出现 self < other 的语句时,会调用__lt__中的逻辑语句
if self.age < other.age:
return True
else:
if self.age == other.age:
return True if self.weight < other.weight else False
return False
def __gt__(self, other): # 当程序出现 self > other 的语句时,会调用__gt__中的逻辑语句
if self.age > other.age:
return True
else:
if self.age == other.age:
return True if self.weight > other.weight else False
return False
def __le__(self, other): # 当程序出现 self <= other 的语句时,会调用__le__中的逻辑语句
pass
def __ge__(self, other): # 当程序出现 self >= other 的语句时,会调用__ge__中的逻辑语句
pass
p1 = Person(“p1”, 2, 15, 70)
p2 = Person(“p2”, 2, 14, 60)
print(p1 < p2) # False
print(p1 > p2) # True
- gt()方法和__lt__()方法,实现其中一个就可以了,但是最好两个都实现。