PyNoAppError: The wx.App object must be created first!

[Raffaello Barella]

When I try to start an application from IDLE(Python GUI), or even from
PythonWin, after having modified it, I often get the error message
"PyNoAppError: The wx.App object must be created first!". But the same
application runs smoothly if I start it from another IDLE window, because my
code already invoked wx.App().MainLoop().
I realize this is just a menial nuisance, and there are worse troubles in
life, but does anybody knows a way to avoid it?
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