get the last index number

[ilcaa72]

s = "kitti"

0,1,2,3,4
k,i,t,t,i

how do i retrieve '4', the last index value. i know i can do a len(s)-1, but i assume there is a function that gives me last number of index, or more eloquent way. Maybe not, just checking

thanks

[Larz60+]

>>> s = 'kitti'
>>> idx = len(s) -1
>>> s[idx]
'i'
>>> s[-1]
'i'
>>> s[len(s)-1]
'i'
>>> len(s)-1
4
>>>

[volcano63]

I can think of couple of solutions

def last_index(string_, char):
   index = -1
   for pos, c in enumerate(string_):
       if c == char:
          index = pos
   return index

def last_index_short(string_, char):
    return length(string_) - string_[::-1].index(char) - 1

[wavic]

>>> s = 'kitty'
>>> s.rindex(s[-1])
4