【python】Set物件的使用範例

smp1=set(['張飛','關羽','劉備','趙雲'])

print(smp1)

smp1.add('馬超') #新增'馬超'至smp1

print("新增'馬超'至smp1:" , smp1)

smp2=smp1.copy() #複製相同set object#

print("複製相同set object:",smp2)

smp2.remove('馬超')

print("移除set中的陣列:",smp2)

#----------------------------------

#判斷某值是否存在set物件中#

print(smp1)

print('馬超' in smp1)

print(smp2)

print('馬超' in smp2)

#------------------------------------

print(smp1.intersection(smp2)) #smp1跟smp2的交集#

print(smp1.union(smp2)) #smp1與smp2的聯集

print(smp1.difference(smp2))#smp1與smp2的差集,只存在smp1的值#

-------------輸出結果---------------

移除set中的陣列: {'關羽', '趙雲', '張飛', '劉備'} {'關羽', '趙雲', '馬超', '張飛', '劉備'} True {'關羽', '趙雲', '張飛', '劉備'} False {'關羽', '張飛', '趙雲', '劉備'} {'關羽', '趙雲', '馬超', '張飛', '劉備'} {'馬超'} PS C:\Users\miller\Python測試code>