更改结构列表中元素的值

my_list = [1, 2, 3, 4, 5]
my_list[2] = 6
print(my_list)  # 输出：[1, 2, 6, 4, 5]

my_list = [1, 2, 3, 4, 5]
for index, value in enumerate(my_list):
    if value == 3:
        my_list[index] = 6
print(my_list)  # 输出：[1, 2, 6, 4, 5]

my_list = [1, 2, 3, 4, 5]
new_list = [6 if value == 3 else value for value in my_list]
print(new_list)  # 输出：[1, 2, 6, 4, 5]