[Python-checkins] bpo-37134: Use PEP570 syntax for sum() (GH-13851)
Pablo Galindo
webhook-mailer at python.org
Wed Jun 5 19:11:50 EDT 2019
https://github.com/python/cpython/commit/c4c421d619baf2ff2f7e09f55b7ae22b8f863c7b
commit: c4c421d619baf2ff2f7e09f55b7ae22b8f863c7b
branch: master
author: Pablo Galindo <Pablogsal at gmail.com>
committer: GitHub <noreply at github.com>
date: 2019-06-06T00:11:46+01:00
summary:
bpo-37134: Use PEP570 syntax for sum() (GH-13851)
files:
M Doc/library/functions.rst
diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index 415a65b4946f..88977056723f 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
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