diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst index 90683c0b00d78a..c040bc4e62e035 100644 --- a/Doc/library/stdtypes.rst +++ b/Doc/library/stdtypes.rst @@ -1970,7 +1970,18 @@ 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 "", line 1, in + 'spam, spam, spam'.index('eggs') + ~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^ + ValueError: substring not found + + See also :meth:`rindex`. .. method:: str.isalnum() pFad - Phonifier reborn

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