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bug#18052: 24.3; python.el and ipython shell


From: Federico Beffa
Subject: bug#18052: 24.3; python.el and ipython shell
Date: Fri, 18 Jul 2014 18:38:11 +0200

I've looked in the ipython configuration file, but have not seen anything.

Do you have any suggestion on where to look further?

On Fri, Jul 18, 2014 at 4:07 PM, Eli Zaretskii <address@hidden> wrote:
>> Date: Fri, 18 Jul 2014 15:51:47 +0200
>> From: Federico Beffa <address@hidden>
>>
>> I'm trying to use the ipython shell from within emacs. To do so I've
>> followed the instructions at the top of python.el and added the
>> following code to my .emacs:
>>
>> (setq
>>  python-shell-interpreter "C:/Anaconda/python.exe"
>>  python-shell-interpreter-args
>>    "-i C:/Anaconda/Scripts/ipython-script.py console --matplotlib=qt"
>>  python-shell-prompt-regexp "In \\[[0-9]+\\]: "
>>  python-shell-prompt-output-regexp "Out\\[[0-9]+\\]: "
>>  python-shell-completion-setup-code
>>    "from IPython.core.completerlib import module_completion"
>>  python-shell-completion-module-string-code
>>    "';'.join(module_completion('''%s'''))\n"
>>  python-shell-completion-string-code
>>    "';'.join(get_ipython().Completer.all_completions('''%s'''))\n")
>>
>> When I execute (M-x) run-python, SOMETIMES the session does not
>> initialize properly and the new buffer looks like this:
>>
>> -----------------------------------------------------------
>> Python 2.7.6 |Anaconda 2.0.1 (64-bit)| (default, Nov 11 2013,
>> 10:49:15) [MSC v.1500 64 bit (AMD64)]
>> Type "copyright", "credits" or "license" for more information.
>>
>> IPython 2.1.0 -- An enhanced Interactive Python.
>> Anaconda is brought to you by Continuum Analytics.
>> Please check out: http://continuum.io/thanks and https://binstar.org
>> ?         -> Introduction and overview of IPython's features.
>> %quickref -> Quick reference.
>> help      -> Python's own help system.
>> object?   -> Details about 'object', use 'object??' for extra details.
>>
>> In [1]:
>> -----------------------------------------------------------
>>
>> The difference compared to the situation when everything is well, is
>> that here I only see "In [1]:", while normally I should see 4 empty
>> input prompts, with the last one reading "In [4]". When I execute any
>> command such as "1+1" and press RET, nothing happens.
>>
>> This happens starting emacs with the -Q option and executing the ipython
>> customization in the *scratch* buffer.
>
> Did you try to explore the possibility that this is caused by
> buffering?  Pipes on Windows are fully buffered, not line-buffered as
> on Posix systems.  If there's some way to control buffering from the
> Python side, I suggest to try that, perhaps it will fix the problem.





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