创建枚举很简单,定义一个继承自Enum的类即可。成员名建议采用大写形式,以表示这是常量。 fromenumimportEnum classWeekday(Enum): MONDAY =1 TUESDAY =2 WEDNESDAY =3 THURSDAY =4 FRIDAY =5 SATURDAY =6 SUNDAY =7 classColor(Enum): RED =1 GREEN =2
example_function(MyEnum.ENUM_VALUE1) 1. 在这个示例中,我们调用了example_function函数,并传递了MyEnum.ENUM_VALUE1作为参数。这将打印出"枚举值为ENUM_VALUE1"。 总结 在本文中,我们学习了如何在Python中定义和使用枚举类。首先,我们定义了枚举类的基本结构,并使用@unique装饰器确保枚举值的唯一性。然后,我们定...
class enum.IntFlag 此基类用于创建可使用按位运算符进行组合而不会丢失其 IntFlag 成员资格的枚举常量。 IntFlag 成员同样也是 int 的子类。 class enum.Flag 此基类用于创建枚举常量 可使用按位运算符进行组合而不会丢失其 Flag 成员资格的枚举常量。 enum.unique() 此Enum 类装饰器可确保只将一个名称绑定到任意...
class Weekday(Enum): File "/usr/lib/python3.4/enum.py", line 524, in unique (enumeration, alias_details)) ValueError: duplicate values found in <enum 'Weekday'>: tusday -> monday 1. 2. 3. 4. 5. 6. 4.有人也在想,我就是不改咋地!我能不能通过另一个方法把成员都打印出来?于是:_...
@unique class Season(Enum): SPRING = 1 SUMMER = 2 AUTUMN = 3 WINTER = 3 # WINTER = 4 for season in Season: print(season) The example fails with theValueError: duplicate values found in <enum 'Season'>: WINTER -> AUTUMNerror, because the AUTUMN and WINTER members have the same value...
Enum):ADMIN=1USER=2GUEST=3# 创建数据库表conn=sqlite3.connect('example.db')cursor=conn.cursor(...
pip install -ihttp://pypi.hustunique.com/requests pip install -ihttp://pypi.mirrors.ustc.edu.cn/requests pip install -ihttps://pypi.tuna.tsinghua.edu.cn/simplerequests pip install -ihttp://mirrors.aliyun.com/pypi/simple--trusted-hostmirrors.aliyun.comrequests ...
['userID'].unique()) num_movies = len(train_ratings_df['movieID'].unique()) print(f'Number of users {num_users}') print(f'Number of movies {num_movies}') model = model(num_users,num_movies,40) plot_model(model, to_file='model_plot.png', show_shapes=True, show_layer_names=...
(10):foryinrange(5):ifx*y>10:result.append((x,y))return{x:complicated_transform(x)forxinlong_generator_function(parameter)ifx is not None}squares_generator=(x**2forxinrange(10))unique_names={user.nameforuserinusersifuser is not None}eat(jelly_beanforjelly_beaninjelly_beansifjelly_bean...
Attributes that are defined as enumerated values in API are implemented asenumin Python, using the native support forenumsin Python 3 and theenum34package in Python 2.7. In this example, the status attribute of theVmtype is defined using theVmStatus enum: ...