tuple 元組變數
Python 基礎: tuple 元組變數
Categories:
與 list 串列 功能一樣，但資料不能被修改
List 串列與 Tuple 元組差異
| 差異 | List 串列 | Tuple 元組 |
|---|---|---|
| 內容 | 內容可改變，新增與刪除 | 內容不可異動 |
| 執行速度 | 較慢 | 較快 |
| 安全 | 較低 | 較高，因為資料不會被異動 |
一般 tuple 元組
tuple_1 = (1, 2, 3, 4, 5)
print("tuple_1: ", tuple_1)
print("tuple_1[3]: ", tuple_1[3])
# tuple_1: (1, 2, 3, 4, 5)
# tuple_1[3]: 4
tuple_1 = (1, "KJ", True)
print("tuple_1: ", tuple_1)
# tuple_1: (1, 'KJ', True)
重複 tuple 元組
tuple_1 = (1, 2, 3)
tuple_2 = tuple_1 * 2
print("tuple_1: ", tuple_1)
print("tuple_2: ", tuple_2)
# tuple_1: (1, 2, 3)
# tuple_2: (1, 2, 3, 1, 2, 3)
取得 tuple 元組中間元素
tuple_1 = (1, 2, 3, 4, 5, 6, 7)
tuple_2 = tuple_1[2:5]
print("tuple_1: ", tuple_1)
print("tuple_2: ", tuple_2)
# tuple_1: (1, 2, 3, 4, 5, 6, 7)
# tuple_2: (3, 4, 5)
錯誤案例
無法修改
TypeError: ’tuple’ object does not support item assignment
tuple_1 = (1, 2, 3, 4, 5, 6, 7)
tuple_1[3] = 33
# TypeError: 'tuple' object does not support item assignment
無法刪除
TypeError: ’tuple’ object does not support item deletion
tuple_1 = (1, 2, 3, 4, 5, 6, 7)
del tuple_1[2:5]
# TypeError: 'tuple' object does not support item deletion