[Python-bugs-list] [ python-Bugs-472727 ] Tkinter.mainloop() confuses IDLE
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Fri, 19 Oct 2001 04:19:06 -0700
Bugs item #472727, was opened at 2001-10-19 04:18
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Category: IDLE
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Edward Loper (edloper)
Assigned to: Guido van Rossum (gvanrossum)
Summary: Tkinter.mainloop() confuses IDLE
Initial Comment:
Cause:
1. create a Tk window
2. call Tkinter.mainloop()
3. close the Tk window created in (1)
Result:
1. IDLE doesn't return to a Python prompt.
2. IDLE won't close, unless you kill it from
the task manager.
Code sample:
>>> import Tkinter
>>> Tkinter.tk()
>>> Tkinter.mainloop()
Presumably, this happens because IDLE is using Tk
itself, and is not isolating the Python interactive
shell from itself well enough. It's possible that
solving this problem would require changes to kinter?
But at the very least, it should be ocumented. A
workaround (posted by stefan kusch) is to use the
following test to see if you're running in IDLE with:
_inidle = type(sys.stdin) == types.InstanceType and \
sys.stdin.__class__.__name__ == 'PyShell'
and not call mainloop() if you're in IDLE.
But, of course, a real fix is preferable to a
workaround :)
A web search turned up several mentions of this, but I
didn't see a bug report for it, so I figured I'd
submit one.
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