From the following list take 2 as a step parameter in range() and reverse the list you get. a = [‘a’,1,2,’b’,’c’,3,4,5,6] code example
Example: range python start at 1
>>> def range1(start, end):
... return range(start, end+1)
...
>>> range1(1, 10)
[1, 2, 3, 4, 5, 6, 7, 8, 9, 10]