[IPython-user] Closing an embedded IPython Shell.
Wed Jul 29 12:31:19 CDT 2009
On Jul 29, 2009, at 11:23 AM, Brian Granger wrote:
> Whew, this is much more complicated then. A few comments:
> * Is your GUI running in the main thread? Most GUI toolkits I know
> of get very grumpy if they are not run in the main thread. This
> alone could cause problems.
No. It's wxPython. wxPython can be run in any thread you want as
long as communication with the GUI methods occur from the same thread
that the main loop is running. We don't use the shell to call GUI
methods. We use the shell to call methods on a device to tune
performance and settings (the device is thead safe.)
> * Are you uses IPython's threaded shells to integrate ipython with
> the GUI? If not, can you better describe how the two are integrated.
No. I specifically don't want -wthread because I don't want calls in
the shell to block the GUI. We have other threads doing heavy USB IO
in the GUI and it needs to run without the commands in the shell
Example, I specifically want to be able to do something like this in
while True: pass
Then I want to be able to have the GUI run without being blocked.
When I see that my command might not be returning, ctrl-c the command
in the shell, and have the GUI continue to run as if it didn't know
what is going on. I see why many people want commands in the shell
run on the GUI thread and I know how IPython uses uses the hijacked
GUI loops to execute the shell commands on the GUI thread but that
doesn't suit my needs.
> * Sometime very soon (like next week) we will be merging some new
> code into the ipython trunk that will have a much better way of
> doing GUI integration (it doesn't require threads). While I haven't
> tested it with embedding, it should make these things much simpler.
> Note: this new stuff won't be in the upcoming 0.10 release.
There may be something that helps but really the only issue I'm having
is when I close the app, my shell doesn't drop back to the prompt
until I press Enter. I don't think it's much related to the GUI
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