方法1：朴素方法 这种方式是在遍历整个list的基础上，将第一个出现的元素添加在新的列表中。 示例代码：# Python 3 code to de ...

If I just wanted to print the 3rd number in this list, it would be: Remember that the first item in the list has the label '0' and not '1'. So, why would you use a list anyway?