search
Search
Login
Unlock 100+ guides
menu
menu
web
search toc
close
Comments
Log in or sign up
Cancel
Post
account_circle
Profile
exit_to_app
Sign out
What does this mean?
Why is this true?
Give me some examples!
search
keyboard_voice
close
Searching Tips
Search for a recipe:
"Creating a table in MySQL"
Search for an API documentation: "@append"
Search for code: "!dataframe"
Apply a tag filter: "#python"
Useful Shortcuts
/ to open search panel
Esc to close search panel
to navigate between search results
d to clear all current filters
Enter to expand content preview
icon_star
Doc Search
icon_star
Code Search Beta
SORRY NOTHING FOUND!
mic
Start speaking...
Voice search is only supported in Safari and Chrome.
Navigate to

Python String | rindex method

schedule Aug 12, 2023
Last updated
local_offer
Python
Tags
mode_heat
Master the mathematics behind data science with 100+ top-tier guides
Start your free 7-days trial now!

Python's str.rindex(~) method returns the index of the last occurrence of the specified substring in the source string. If the substring is not found, ValueError exception is raised.

Parameters

1. sub | string

The substring to search for in the source string.

2. start | number | optional

The index of the source string from which to start the search (inclusive). Defaults to 0.

3. end | number | optional

The index of the source string at which to end the search (exclusive). Defaults to end=len(source string).

Return value

If the substring is found, then the index of the last occurrence of the substring in the source string.

If not found, then ValueError exception is raised.

Examples

Basic usage

To obtain the starting index of the last occurrence of "bc":

w = "abcdbc"
w.rindex("bc")
4

The last occurrence of "bc" in "abcdbc" occurs at index position 4 (after the 'd').

ValueError

To obtain the starting index of the last occurrence of "gg":

x = "abcdbc"
x.rindex("gg")
ValueError: substring not found

As "gg" was not found in "abcdbc", ValueError was raised.

Start parameter

To start searching from index 2 (inclusive):

y = "abcdbc"
y.rindex("bc", 2)
4

End parameter

To stop searching at index 3 (exclusive):

z = "abcdbc"
z.rindex("bc", 0, 3)
1

As the search ends at and is exclusive of index position 3 ('d'), the last occurrence of "bc" is at index 1.

robocat
Published by Isshin Inada
Edited by 0 others
Did you find this page useful?
thumb_up
thumb_down
Comment
Citation
Ask a question or leave a feedback...
thumb_up
0
thumb_down
0
chat_bubble_outline
0
settings
Enjoy our search
Hit / to insta-search docs and recipes!