Insert at first position of a list in Python
How can I insert an element at the first index of a list ? If I use list.insert(0,elem), do elem modify the content of the first index? Or do I have to create a new list with the first elem and then copy the old list inside this new one?
The best way to find out is to just run an example:
In : ls = [1,2,3] In : ls.insert(0, "new") In : ls Out: ['new', 1, 2, 3]