[IPython-dev] can delete prompts in ipythonqt

Brian Granger ellisonbg at gmail.com
Thu Sep 2 20:17:43 EDT 2010

On Thu, Sep 2, 2010 at 5:13 PM, Fernando Perez <fperez.net at gmail.com> wrote:
> On Thu, Sep 2, 2010 at 5:10 PM, Evan Patterson <epatters at enthought.com> wrote:
>> The fundamental issue is that the frontend has no way to tell whether
>> a reply that has not come back from the kernel is a result of the
>> kernel being broken or merely busy--the frontend has no choice but to
>> be silent. Although I've never seen the frontend outright freeze, you
>> can verify that this has not happened by pressing Ctrl-Period.
>> The only way to verify that the kernel is sending the messages is to
>> look at the debug output.
> In this case I had an error at the very beginning, and the frontend
> was just frozen, without any messages having been emmitted by the
> kernel yet.  Kind of staring at a blank wall...
> But I figured it out by the sheer power of my raw intellect (aka,  I
> stared at the same line of code for 5 minutes until I realized how
> dumb I was).  All good now :)

Debugging like that is a super nice skill to have - not easy though...



> Cheers,
> f
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Brian E. Granger, Ph.D.
Assistant Professor of Physics
Cal Poly State University, San Luis Obispo
bgranger at calpoly.edu
ellisonbg at gmail.com

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