Python元组索引、截取：
索引下标：
tuple_1 = ('a','b','c','d','e','f','g','h') print(tuple_1[0]) # a print(tuple_1[3]) # d print(tuple_1[7]) # h # 当索引下标为负数时，-1表示最右端元素，从右向左依次递减 print(tuple_1[-1]) # h print(tuple_1[-4]) # e
切片操作：
# 使用切片进行截取列表元素 tuple_1 = (1,2,3,4,5,6,7,8,9,10) print(tuple_1[::]) # (1, 2, 3, 4, 5, 6, 7, 8, 9, 10) print(tuple_1[2:8]) # (3, 4, 5, 6, 7, 8) print(tuple_1[2:8:3]) # (3, 6) , 不包含end print(tuple_1[2::-1]) # (3, 2, 1) print(tuple_1[8:1:-1]) # (9, 8, 7, 6, 5, 4, 3) print(tuple_1[8:1:-2]) # (9, 7, 5, 3) print(tuple_1[-1:-5:-1]) # (10, 9, 8, 7)
2020-02-09