# 第四支程式 有序可變動列表list,中括號表示,可以額外變動 比如:x=[1,2,3],x[2]=0,print(x)=[1,2,0] 有序不可變動列表Tuple,小括號表示,不可以額外變動 比如:x=(1,2,3),x[2]=0,print(x)跳不出東西 length 可以獲得列表的長度 比如grades=[12,60,15,70,90] length=len(grades) print(length)=5
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