[Python-Dev] Event loops, PyOS_InputHook, and Tkinter

Ronald Oussoren ronaldoussoren at mac.com
Mon Nov 14 19:21:13 CET 2005

On 14-nov-2005, at 8:16, Josiah Carlson wrote:

> I personally like Edward Loper's idea of just running your own event
> handler which deals with drawing, suspend/resume, etc...
>> If, however, Python contains an event loop that takes care of  
>> events as
>> well as Python commands, redrawing won't happen until Python has
>> executed all plot commands -- so no repainting in vain here.
> ...but even without posting and reading events as stated above, one
> could check for plot events every 1/100th a second.  If there is an
> update, and it has been 10/100 seconds since that undrawn event  
> happened,
> redraw. Tune that 10 up/down to alter responsiveness characteristics.
> Or heck, if you are really lazy, people can use a plot() calls, but
> until an update_plot() is called, the plot isn't updated.

I wonder why nobody has suggested a seperate thread for managing the  
GUI and
using the hook in Python's event loop to issue the call to update_plot.

> There are many reasonable solutions to your problem, not all of which
> involve changing Python's event loop.
>  - Josiah
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