list[1],list[4]=list [4],list [1]
时间: 2023-12-24 20:05:51 浏览: 12
This is a Python code snippet that swaps the values of the first and fifth elements in a list.
For example, if we have a list `my_list = [10, 20, 30, 40, 50]`, running this code will swap the values of the first and fifth elements, resulting in `my_list = [50, 20, 30, 40, 10]`.
The code works by using Python's tuple packing and unpacking feature. The expression `list[1], list[4]` creates a tuple of two values, where the first value is the element at index 1 of the list (the second element), and the second value is the element at index 4 of the list (the fifth element).
The expression `list[4], list[1]` creates another tuple with the same two values, but in reverse order.
Finally, the two tuples are unpacked and their values are assigned to the same indices in the list, effectively swapping their positions.