https://github.com/python/cpython/commit/4fb6a31bce36c8e04c0bda63f13467fc594b4425
commit: 4fb6a31bce36c8e04c0bda63f13467fc594b4425
branch: main
author: Adorilson Bezerra <[email protected]>
committer: hugovk <[email protected]>
date: 2026-01-06T23:42:11+02:00
summary:
gh-106318: Add example for str.index() (#137023)
files:
M Doc/library/stdtypes.rst
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index d77d7310020195..5d64af43b69828 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -2045,7 +2045,18 @@ expression support in the :mod:`re` module).
.. method:: str.index(sub[, start[, end]])
Like :meth:`~str.find`, but raise :exc:`ValueError` when the substring is
- not found.
+ not found. For example:
+
+ .. doctest::
+
+ >>> 'spam, spam, spam'.index('eggs')
+ Traceback (most recent call last):
+ File "<python-input-0>", line 1, in <module>
+ 'spam, spam, spam'.index('eggs')
+ ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
+ ValueError: substring not found
+
+ See also :meth:`rindex`.
.. method:: str.isalnum()
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