如何实现Python __lt__ __gt__自定义（重载）运算符？
Python具有神奇的方法来定义运算符的重载行为。比较运算符（<，<=，>，>=，==和！=）可以通过为__lt__，__le__，__gt__，__ge__，__eq__和__ne__魔术方法提供定义来重载。遵循程序重载<和>运算符以比较距离类的对象。
class distance:
def __init__(self, x=5,y=5):
self.ft=x
self.inch=y
def __eq__(self, other):
if self.ft==other.ft and self.inch==other.inch:
return "both objects are equal"
else:
return "both objects are not equal"
def __lt__(self, other):
in1=self.ft*12+self.inch
in2=other.ft*12+other.inch
if in1<in2:
return "first object smaller than other"
else:
return "first object not smaller than other"
def __gt__(self, other):
in1=self.ft*12+self.inch
in2=other.ft*12+other.inch
if in1<in2:
return "first object greater than other"
else:
return "first object not greater than other"
d1=distance(5,5)
d2=distance()
print (d1>d2)
d3=distance()
d4=distance(6,10)
print (d1<d2)
d5=distance(3,11)
d6=distance()
print(d5<d6)结果显示了__lt__和_gt__魔术方法的实现
first object not greater than other first object not smaller than other first object smaller than other
热门推荐
10 对患者生日祝福语简短
11 结婚祝福语简短装备
12 周岁祝福语学生文案简短
13 订婚领证祝福语简短精辟
14 导师获奖祝福语大全简短
15 新婚购房祝福语简短精辟
16 牛年祝福语简短的爱人
17 送芒果的祝福语简短
18 送给学长毕业祝福语简短