From: Pablo Galindo <Pablogsal@gmail.com>
Date: Wed, 5 Jun 2019 23:11:46 +0000 (+0100)
Subject: bpo-37134: Use PEP570 syntax for sum() (GH-13851)
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=c4c421d619baf2ff2f7e09f55b7ae22b8f863c7b;p=python

bpo-37134: Use PEP570 syntax for sum() (GH-13851)
---

diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 415a65b494..8897705672 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -1562,11 +1562,11 @@ are always available.  They are listed here in alphabetical order.
    about strings, see :ref:`textseq`.
 
 
-.. function:: sum(iterable[, start])
+.. function:: sum(iterable, /, start=0)
 
    Sums *start* and the items of an *iterable* from left to right and returns the
-   total.  *start* defaults to ``0``. The *iterable*'s items are normally numbers,
-   and the start value is not allowed to be a string.
+   total.  The *iterable*'s items are normally numbers, and the start value is not
+   allowed to be a string.
 
    For some use cases, there are good alternatives to :func:`sum`.
    The preferred, fast way to concatenate a sequence of strings is by calling