[Python-checkins] Fix mock_open docstring to use readline (#11176)

[Chris Withers]

https://github.com/python/cpython/commit/71f82a2f2085464f5ec99c16bce57bd1631733bd
commit: 71f82a2f2085464f5ec99c16bce57bd1631733bd
branch: master
author: Xtreak <tirkarthi at users.noreply.github.com>
committer: Chris Withers <chris at withers.org>
date: 2018-12-20T16:00:21Z
summary:

Fix mock_open docstring to use readline (#11176)

files:
M Lib/unittest/mock.py

diff --git a/Lib/unittest/mock.py b/Lib/unittest/mock.py
index 38189c9aec2e..3a22a48c997f 100644
--- a/Lib/unittest/mock.py
+++ b/Lib/unittest/mock.py
@@ -2376,7 +2376,7 @@ def mock_open(mock=None, read_data=''):
     default) then a `MagicMock` will be created for you, with the API limited
     to methods or attributes available on standard file handles.
 
-    `read_data` is a string for the `read` methoddline`, and `readlines` of the
+    `read_data` is a string for the `read`, `readline` and `readlines` of the
     file handle to return.  This is an empty string by default.
     """
     def _readlines_side_effect(*args, **kwargs):