rindex() : Find the rightmost matching of the search string and return the position in Python

Find the rightmost matching of search string and return the position

main_string.rindex(search_string, start, end)

search_string

Required, String to be searched and position is returned if found.

start

Optional, Starting position of search , by default it is from 0 or starting position of string

end

Optional , ending position of search, by default it is end of the string.

This is case sensitive search

my_str='Welcome to plus2net.com Python section'
output=my_str.rindex('co') 
print(output) # output is 20

Using optional parameters start and end.

my_str='Welcome to plus2net.com Python section'
output=my_str.rindex('co',10,22)
print(output) # output is 20

If search string is not found then value error is generated.

my_str='Welcome to plus2net.com Python section'
output=my_str.rindex('co',10,21)
print(output)

Output

ValueError                        Traceback (most recent call last)
 in ()
      1 my_str='Welcome to plus2net.com Python section'
----> 2 output=my_str.rindex('co',10,21)
      3 print(output)

ValueError: substring not found

rindex() method raise an exception if searched string is not found but rfind() returns -1 if searched string is not found. That is the main difference between rindex() and rfind()

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