add enum sample

Author: michaelliao

py3/oop_advance/use_enum.py

@@ -0,0 +1,32 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+
+from enum import Enum, unique
+
+@unique
+class Weekday(Enum):
+    Sun = 0
+    Mon = 1
+    Tue = 2
+    Wed = 3
+    Thu = 4
+    Fri = 5
+    Sat = 6
+
+day1 = Weekday.Mon
+
+print('day1 =', day1)
+print('Weekday.Tue =', Weekday.Tue)
+print('Weekday[\'Tue\'] =', Weekday['Tue'])
+print('Weekday.Tue.value =', Weekday.Tue.value)
+print('day1 == Weekday.Mon ?', day1 == Weekday.Mon)
+print('day1 == Weekday.Tue ?', day1 == Weekday.Tue)
+print('day1 == Weekday(1) ?', day1 == Weekday(1))
+
+for name, member in Weekday.__members__.items():
+    print(name, '=>', member)
+
+Month = Enum('Month', ('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'))
+
+for name, member in Month.__members__.items():
+    print(name, '=>', member, ',', member.value)