[New-bugs-announce] [issue13858] readline fails on nonblocking, unbuffered io.FileIO objects
report at bugs.python.org
Wed Jan 25 06:13:48 CET 2012
New submission from Matt Joiner <anacrolix at gmail.com>:
_io._IOBase.readline doesn't seem to like _io.FileIO.read returning None, which occurs when it's unbuffered and nonblocking. (Modules/_io/fileio.c:745 in trunk). Can this be handled some other way?
Python 3.3.0a0 (default:fb0f4fe8123e+, Jan 24 2012, 11:21:36)
[GCC 4.6.2] on linux
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>>> import os, io
>>> r, w = os.pipe2(os.O_NONBLOCK)
>>> f = io.open(r, 'rb', 0)
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
OSError: read() should have returned a bytes object, not 'NoneType'
components: IO, Library (Lib)
title: readline fails on nonblocking, unbuffered io.FileIO objects
versions: Python 3.3
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