[Python-checkins] Fix documentation for input and output tutorial (GH-8231)

[Miss Islington (bot)]

https://github.com/python/cpython/commit/c87b1aabbd660d111afde326fbbd897fb689a7b8
commit: c87b1aabbd660d111afde326fbbd897fb689a7b8
branch: 3.7
author: Miss Islington (bot) <31488909+miss-islington at users.noreply.github.com>
committer: GitHub <noreply at github.com>
date: 2018-07-10T17:51:03-07:00
summary:

Fix documentation for input and output tutorial (GH-8231)


The ValueError message ends with a period.
(cherry picked from commit 9cffdbffc3b2dec18def1c3e8cfa166d01d609df)

Co-authored-by: Lysandros Nikolaou <lisandrosnik at gmail.com>

files:
M Doc/tutorial/inputoutput.rst

diff --git a/Doc/tutorial/inputoutput.rst b/Doc/tutorial/inputoutput.rst
index dfa2806e1752..417c3b1319c0 100644
--- a/Doc/tutorial/inputoutput.rst
+++ b/Doc/tutorial/inputoutput.rst
@@ -338,7 +338,7 @@ automatically fail. ::
    >>> f.read()
    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
-   ValueError: I/O operation on closed file
+   ValueError: I/O operation on closed file.
 
 
 .. _tut-filemethods: