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练习（参考楼下的）

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冯先生Stefan

#1 Created at ... [Delete] [Delete and Lock User] 
# -*- coding: utf-8 -*-
from  enum import Enum, unique
@unique
class Gender(Enum):
    Male = 0
    Female = 1
class Student(object):
    def __init__(self, name, gender = 0):
        self.name = name
        if isinstance(gender, Gender):#gender是枚举成员
            self.gender = gender
        elif isinstance(gender, str):#gender是枚举成员名称
            if gender.capitalize() in Gender.__members__.keys():
                self.gender = Gender[gender.capitalize()]
            else:
                raise ValueError('%s is not a valid gender!' % gender)
        elif isinstance(gender, int):#gender是枚举成员的值
            if gender in Gender._value2member_map_:
                self.gender = Gender(gender)
            else:
                raise ValueError('%s is not a valid gender!' % gender)
        else:
            raise ValueError('%s is not a valid gender!' % gender)
#测试
alan = Student('Alan', 0)
bart = Student('Bart', Gender.Male)
cathy = Student('Cathy', 'female')
for i in [alan, bart, cathy]:
    print(i.gender)

Stupid_Tim

#2 Created at ... [Delete] [Delete and Lock User]

你好  我想问一下  

Gender._value2member_map_

这个你是从哪里知道的？

freedempire

#3 Created at ... [Delete] [Delete and Lock User] 
if gender in Gender._value2member_map_:

也可以写成：

if gender in (Gender[key].value for key in Gender.__members__.keys()):

或者：

if gender in (value.value for value in Gender.__members__.values()):
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