Message 307763 - Python tracker

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Author	izbyshev
Recipients	abacabadabacaba, anacrolix, benjamin.peterson, docs@python, izbyshev, martin.panter, neologix, pitrou, python-dev, sbt, stutzbach
Date	2017-12-06.18:33:11
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1512585191.29.0.213398074469.issue13322@psf.upfronthosting.co.za>
In-reply-to

Content
For added fun: at least one part of the standard library doesn't expect None returns from read() in the buffering layer. >>> import os >>> r, w = os.pipe2(os.O_NONBLOCK) >>> f = os.fdopen(r, 'r') >>> f.read() Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/home/izbyshev/workspace/cpython/Lib/codecs.py", line 321, in decode data = self.buffer + input TypeError: can't concat NoneType to bytes Note that nonblock-none.patch doesn't seem to address that.

For added fun: at least one part of the standard library doesn't expect None returns from read() in the buffering layer.

>>> import os
>>> r, w = os.pipe2(os.O_NONBLOCK)
>>> f = os.fdopen(r, 'r')
>>> f.read()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/izbyshev/workspace/cpython/Lib/codecs.py", line 321, in decode
    data = self.buffer + input
TypeError: can't concat NoneType to bytes

Note that nonblock-none.patch doesn't seem to address that.

History
Date	User	Action	Args
2017-12-06 18:33:11	izbyshev	set	recipients: + izbyshev, pitrou, benjamin.peterson, stutzbach, anacrolix, neologix, abacabadabacaba, docs@python, python-dev, sbt, martin.panter
2017-12-06 18:33:11	izbyshev	set	messageid: <1512585191.29.0.213398074469.issue13322@psf.upfronthosting.co.za>
2017-12-06 18:33:11	izbyshev	link	issue13322 messages
2017-12-06 18:33:11	izbyshev	create