Turple

不可變串列稱為Turple
相對於可變串列只能執行Query類操作

Turple字面值

    1. ()                   # 空串列
    2. (1,2,3)              # 三個項目
    3. (1, (4,5,6))         # 巢狀串列
    4. (1, "abc", 3)        # 異質串列

內建運算

arr = (1,2,3)

Query:

    1. arr[0]   == 1                   # 索引運算
    2. arr[-1]  == 3                   # 負索引
    3. arr[1:3] == (2,3)               # 切片
    4. arr[0:3] == (1,2,3)             # 切片
    5. arr[:3]  == arr[0:3]            # True
    6. arr[:-1] == arr[0:2]            # True
    7. arr[:]   == (1,2,3)             # 拷貝
    8. arr + (4,5,6) == (1,2,3,4,5,6)  # 串接
    9. arr * 2 == (1,2,3,1,2,3)        # 重複