From: Cristian Ciupitu <cristian.ciupitu@yahoo.com>
Date: Thu, 21 Feb 2019 07:53:06 +0000 (+0200)
Subject: Doc: fix example for iter() function. (GH-11959)
X-Git-Tag: v3.8.0a2~30
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=11fa0e48a958716186eb99348a46064e944eccf6;p=thirdparty%2FPython%2Fcpython.git

Doc: fix example for iter() function. (GH-11959)

read() returns bytes for a file opened in binary mode,
so b'' should be used as a sentinel instead of ''.
Otherwise the loop will be infinite.
---

diff --git a/Doc/library/functions.rst b/Doc/library/functions.rst
index cca28ff5fb3b..ebbee71f48ed 100644
--- a/Doc/library/functions.rst
+++ b/Doc/library/functions.rst
@@ -816,7 +816,7 @@ are always available.  They are listed here in alphabetical order.
 
       from functools import partial
       with open('mydata.db', 'rb') as f:
-          for block in iter(partial(f.read, 64), ''):
+          for block in iter(partial(f.read, 64), b''):
               process_block(block)