[issue41176] revise Tkinter mainloop dispatching flag behavior

[E. Paine]

E. Paine <paineelisha at gmail.com> added the comment:

Apologies, it is not waiting for the tcl queue and instead the call waits indefinitely for `Tcl_ConditionWait` (tkinter adds it to the queue and then waits for the command to finish executing). Do we need some mechanism to alert people after a second, for example, that the thread is waiting for the mainloop to come up?

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nosy: +taleinat

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue41176>
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