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Commit194fd17

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bpo-32839: Add the after_info() method for Tkinter widgets (GH-5664)
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‎Doc/whatsnew/3.13.rst

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@@ -791,6 +791,9 @@ tkinter
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:class:`tkinter.ttk.Style`.
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(Contributed by Serhiy Storchaka in:gh:`68166`.)
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* Add the:meth:`!after_info` method for Tkinter widgets.
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(Contributed by Cheryl Sabella in:gh:`77020`.)
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traceback
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---------
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‎Lib/test/test_tkinter/test_misc.py

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@@ -232,6 +232,46 @@ def callback():
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withself.assertRaises(tkinter.TclError):
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root.tk.call('after','info',idle1)
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deftest_after_info(self):
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root=self.root
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# No events.
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self.assertEqual(root.after_info(), ())
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# Add timer.
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timer=root.after(1,lambda:'break')
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# With no parameter, it returns a tuple of the event handler ids.
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self.assertEqual(root.after_info(), (timer, ))
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root.after_cancel(timer)
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timer1=root.after(5000,lambda:'break')
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timer2=root.after(5000,lambda:'break')
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idle1=root.after_idle(lambda:'break')
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# Only contains new events and not 'timer'.
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self.assertEqual(root.after_info(), (idle1,timer2,timer1))
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# With a parameter returns a tuple of (script, type).
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timer1_info=root.after_info(timer1)
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self.assertEqual(len(timer1_info),2)
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self.assertEqual(timer1_info[1],'timer')
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idle1_info=root.after_info(idle1)
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self.assertEqual(len(idle1_info),2)
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self.assertEqual(idle1_info[1],'idle')
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root.after_cancel(timer1)
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withself.assertRaises(tkinter.TclError):
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root.after_info(timer1)
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root.after_cancel(timer2)
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withself.assertRaises(tkinter.TclError):
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root.after_info(timer2)
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root.after_cancel(idle1)
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withself.assertRaises(tkinter.TclError):
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root.after_info(idle1)
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# No events.
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self.assertEqual(root.after_info(), ())
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deftest_clipboard(self):
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root=self.root
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root.clipboard_clear()

‎Lib/tkinter/__init__.py

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@@ -897,6 +897,21 @@ def after_cancel(self, id):
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pass
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self.tk.call('after','cancel',id)
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defafter_info(self,id=None):
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"""Return information about existing event handlers.
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With no argument, return a tuple of the identifiers for all existing
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event handlers created by the after and after_idle commands for this
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interpreter. If id is supplied, it specifies an existing handler; id
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must have been the return value from some previous call to after or
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after_idle and it must not have triggered yet or been canceled. If the
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id doesn't exist, a TclError is raised. Otherwise, the return value is
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a tuple containing (script, type) where script is a reference to the
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function to be called by the event handler and type is either 'idle'
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or 'timer' to indicate what kind of event handler it is.
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"""
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returnself.tk.splitlist(self.tk.call('after','info',id))
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defbell(self,displayof=0):
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"""Ring a display's bell."""
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self.tk.call(('bell',)+self._displayof(displayof))
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Add the:meth:`after_info` method for Tkinter widgets.

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