From: Martin Panter Date: Sat, 3 Oct 2015 07:46:04 +0000 (+0000) Subject: Issue #16701: Document += and *= for mutable sequences X-Git-Tag: v3.5.1rc1~217^2 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=3795d12a0d6f2be8d0a062c3ba878fc4800e2db1;p=thirdparty%2FPython%2Fcpython.git Issue #16701: Document += and *= for mutable sequences --- diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst index c3dc63de9fd3..ce3c5320d8b7 100644 --- a/Doc/library/stdtypes.rst +++ b/Doc/library/stdtypes.rst @@ -1063,10 +1063,14 @@ accepts integers that meet the value restriction ``0 <= x <= 255``). | ``s.copy()`` | creates a shallow copy of ``s``| \(5) | | | (same as ``s[:]``) | | +------------------------------+--------------------------------+---------------------+ -| ``s.extend(t)`` | extends *s* with the | | -| | contents of *t* (same as | | +| ``s.extend(t)`` or | extends *s* with the | | +| ``s += t`` | contents of *t* (for the | | +| | most part the same as | | | | ``s[len(s):len(s)] = t``) | | +------------------------------+--------------------------------+---------------------+ +| ``s *= n`` | updates *s* with its contents | \(6) | +| | repeated *n* times | | ++------------------------------+--------------------------------+---------------------+ | ``s.insert(i, x)`` | inserts *x* into *s* at the | | | | index given by *i* | | | | (same as ``s[i:i] = [x]``) | | @@ -1107,6 +1111,12 @@ Notes: .. versionadded:: 3.3 :meth:`clear` and :meth:`!copy` methods. +(6) + The value *n* is an integer, or an object implementing + :meth:`~object.__index__`. Zero and negative values of *n* clear + the sequence. Items in the sequence are not copied; they are referenced + multiple times, as explained for ``s * n`` under :ref:`typesseq-common`. + .. _typesseq-list: