python get last level by parsing character code example

Example 1: how to select last 2 elements in a string python

>>>mystr = "abcdefghijkl"
>>>mystr[-4:]
'ijkl'

>>>mystr[:-4] #to select all but last 4 characters
'abcdefgh'

Example 2: python everything after last slash

url.rsplit('/', 1)[-1]