[issue8006] os.popen in Python 3.1
Bob Buckley added the comment: I could not get it to open a write pipe. I am trying to drive GNUplot from Python. It worked OK in Python 2.x but does not work well in 3.x. I have it partially working now ... I am calling subprocess.Popen but I cannot get a text mode pipe which is disappointing. I have not yet got my head around Python 3's byte vs string stuff. regards Bob Buckley On 21/03/2010 8:02 AM, R. David Murray wrote: > R. David Murray added the comment: > > Well, actually os.popen in Python3 is implemented by calling subprocess.Popen. > > So, Bob, how does it fail? > > -- > nosy: +r.david.murray > priority: -> normal > stage: -> test needed > > ___ > Python tracker > <http://bugs.python.org/issue8006> > ___ > -- ___ Python tracker <http://bugs.python.org/issue8006> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
[issue8006] os.popen in Python 3.1
Bob Buckley added the comment: Sorry I didn't get back to you. Originally, I had trouble with just getting a pipe ... but updating my Python software seemed to make that problem go away. I also had problems with Python 2.6 when drawing more complicated figures. I could not tell whether the issue of sending all the data via a pipe is with the Python Library, with GNUplot or with Windows pipes. I also believe the problem I had was with buffering. I had to get my code working so I found another solution (I write all my GNUplot commands to a file, then just send a "load file.txt" command via the pipe. I would like to be able to use pipes to communicate so I will try to use the new subprocess.Popen and Popen.communicate method and see if I can get that working reliably in 2.6 and 3.1 This will give me an idea about whether there is output from GNUplot that might be filling some buffer when using the os.popen method. -- status: pending -> open ___ Python tracker <http://bugs.python.org/issue8006> ___ ___ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
