indexing from last python code example

Example 1: last index in python

# using rindex() 
test_string = "abcabcabc"
# using rindex() 
# to get last element occurrence 
res = test_string.rindex('c')  
# printing result 
print ("The index of last element occurrence: " + str(res))

OUTPUT:
  The index of last element occurrence: 8

Example 2: indexing python first and last

l = [1,2,3,4,5]
l[::len(l)-1]