by R4R Team

- rfind() is python in-build function which are used to find the index of the substring in the given string.
- if it not find the searching element in given string then it will return location -1.

Syntax-

str.rfind(str1,beg,end)

- here str is given string.
- and str1 is the substring whose index is to be find
- beg and end are the starting and ending point of given string where you want to search.

Difference between find() and rfind() in python-

Basically, both function are used to search the location of the substring in given string but
- find() start searching from the left side of the string
- and rfind() start searching from the right side of the string.

Example

string is s="This is is string"
s.find("is") will give 5
s.rfind("is") will give 8


program-

s="this is is string"
print(s.rfind("is"))

s="Hello program"
print(s.rfind("o"))

s="mytext"
print(s.rfind("m"))

s="mytext"
print(s.rfind("t"))

s="mytext"
print(s.rfind("t",0,3))

output-

8
8
0
5
2

-In this program, we search the location of substring in given string by using s.rfind(str).
- In last line, we use s,rfind("t",0,3) it means that we find the 't' in only in range 0 to 3 so it will give index 2 value.