[IPython-User] CTRL-C doesn't work in pylab, EPD-7.3.1-macos-i386, WXAgg backend

Ryan Abernathey ryan.abernathey@gmail....
Mon Jun 4 14:59:54 CDT 2012


Thank you MinRK. I guess I will just use the OSX backend.
-R


On Mon, Jun 4, 2012 at 12:51 PM, MinRK <benjaminrk@gmail.com> wrote:

>
>
> On Mon, Jun 4, 2012 at 12:33 PM, Ryan Abernathey <
> ryan.abernathey@gmail.com> wrote:
>
>> Hello,
>>
>> After researching this problem extensively on my own, I have decided to
>> turn to these mailing lists for help. I apologize if the solution is
>> obvious or already documented--I have not been able to find a solution
>> elsewhere. This seems like such a fundamental problem that someone out
>> there must have solved it.
>>
>> I am using the standard 32-bit Enthought python distribution for Mac,
>> version 7.3.1. The ipython version is 0.12.1. The default backend for pylab
>> in this configuration is WXAgg, which seems to provide the best performance
>> in terms of figure rendering. I imagine that many ipython users are also
>> using this default configuration. For interactive work, I start ipython
>> using the command
>> $ ipython --pylab
>>
>> The problem is that, in this environment, CTRL-C does not work at all! It
>> cannot be used to cancel mistaken input, and, more crucially, it
>> cannot interrupt a running command. This is a huge limitation which renders
>> the environment almost unusable for me. I can work around the problem by
>> using a different backend (e.g. TK or OSX), but these have their own
>> disadvantages. I have confirmed this problem on several different systems
>> running different versions of Mac OS (both 10.6 and 10.7).
>>
>> So my question is simple: is it possible to use ipython in pylab mode
>> with the WXAgg backend on a Mac with CTRL-C functioning properly?
>>
>> I sincerely appreciate any help you can offer.
>>
>
> One of the oldest issues in IPython:
> https://github.com/ipython/ipython/issues/122
>
> I typically use the native backend (OS X), which I find behaves the best,
> but Qt also tends to behave better than Wx.
>
> You might try upgrading to current IPython master, to see if there is any
> improvement.  I know there has been some fiddling with signals since
> 0.12.1, but I'm not sure if Wx is affected.
>
> -MinRK
>
>
>> Thank You,
>> Ryan
>>
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>>
>
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