Insert at first position of a list in Python

Question

How can I insert an element at the first index of a list  If I use list insert 0  elem   does 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

User · Answer

From the documentation       list insert i  x    Insert an item at a given position  The first   argument is the index of the element before which to insert  so   a insert 0  x  inserts at the front of the list  and a insert len a  x  is   equivalent to a append x    http   docs python org 2 tutorial datastructures html more-on-lists

User · Answer

Use insert   In  1   ls    1 2 3   In  2   ls insert 0   new    In  3   ls Out 3     new   1  2  3

[python] Insert at first position of a list in Python

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