python中沒有enum列舉型別，可能python認為這玩意壓根就沒用，下面列舉了三種方法模擬enum列舉型別
方法1. 使用自定義類
class numbers(object):
one = 1
two = 2
th = 3
assert numbers.one == 1
assert numbers.two == 2
assert numbers.three == 3
方法2：www.cppcns.com使用函式動態建立類
def enum(**enums):
return type('enum', (object,), enums)
numbers = enum(one=1, two=2, three=3)
assert numbers.one == 1
assert numbers.two == 2
assert numbers.yrpzvthree == 3
方法3：建立乙個從python的集合擴充套件來的物件
class enum(set):
def __getattr__(self, name):
if name in self:
return name
raise attributeerror
numbers = enum( "one two three".split() )
error = false
try:
print numbers.one
print numbers.two
p程式設計客棧rint numbers.three
except:
error = true
assert error == false
try:
print numbers.four
except:
error = true
assert error == true
本文標題: python模擬enum列舉型別的方法小結
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