Message 217044 - Python tracker

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In-reply-to
Author	raylu
Recipients	raylu
Date	2014年04月22日.23:35:45
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1398209745.28.0.851161689347.issue21332@psf.upfronthosting.co.za>

Content
https://docs.python.org/3.3/library/subprocess.html says "bufsize will be supplied as the corresponding argument to the open() function when creating the stdin/stdout/stderr pipe file objects: ... 1 means line buffered" but it calls io.open with 'wb' and 'rb': http://hg.python.org/cpython/file/c9cb931b20f4/Lib/subprocess.py#l828 This puts the file in binary mode, and https://docs.python.org/3.3/library/functions.html#open says "1 to select line buffering (only usable in text mode)" Even with universal_newlines=True, the TextIOWrapper isn't passed line_buffering=True. There's actually no way to get line buffering any more.

Content

https://docs.python.org/3.3/library/subprocess.html says
"bufsize will be supplied as the corresponding argument to the open() function when creating the stdin/stdout/stderr pipe file objects: ... 1 means line buffered"
but it calls io.open with 'wb' and 'rb': http://hg.python.org/cpython/file/c9cb931b20f4/Lib/subprocess.py#l828
This puts the file in binary mode, and https://docs.python.org/3.3/library/functions.html#open says
"1 to select line buffering (only usable in text mode)"
Even with universal_newlines=True, the TextIOWrapper isn't passed line_buffering=True. There's actually no way to get line buffering any more.

History
Date	User	Action	Args
2014年04月22日 23:35:45	raylu	set	recipients: + raylu
2014年04月22日 23:35:45	raylu	set	messageid: <1398209745.28.0.851161689347.issue21332@psf.upfronthosting.co.za>
2014年04月22日 23:35:45	raylu	link	issue21332 messages
2014年04月22日 23:35:45	raylu	create

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