enum
| Введение | |
| Перебор (итерация) | |
| Статьи про Python |
Введение
Перечисление-это набор символических имен (членов), привязанных к уникальным,
постоянным значениям.
Внутри перечисления члены могут сравниваться по идентичности
Также по ним можно итерировать (пример)
Создайте файл
enum_demo.py
и копируйте туда код из примеров.
Запустить файл можно командой
python3 enum_demo.py
from enum import Enum
# Using enum class create enumerations
class Days(Enum):
Mon = 1
Tue = 2
Wed = 3
Sun = 7
# print the enum member as a string
print ("The enum member as a string is : ", end = ' ')
print (Days.Mon)
# print the enum member as a repr
print ("The enum member as a repr is : ",end="")
print (repr(Days.Sun))
# Check type of enum member
print ("The type of enum member is : ",end ="")
print (type(Days.Mon))
# print name of enum member
print ("The name of enum member is : ",end ="")
print (Days.Tue.name)
# print value of enum member
print ("The value of enum member is : ",end ="")
print (Days.Tue.value)
print(f"{Days.Wed} name is {Days.Wed.name} value is {Days.Wed.value}")
python enum_demo.py
The enum member as a string is : Days.Mon The enum member as a repr is : <Days.Sun: 7> The type of enum member is : <enum 'Days'> The name of enum member is : Tue The value of enum member is : 2 Days.Wed name is Wed value is 3
Перебор (итерация)
Можно перебрать члены класса циклом
for day in Days:
print(f"{day} name is {day.name} value is {day.value}")
Days.Mon name is Mon value is 1 Days.Tue name is Tue value is 2 Days.Wed name is Wed value is 3 Days.Sun name is Sun value is 7
