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Expand Up		@@ -791,6 +791,9 @@ tkinter
		:class:`tkinter.ttk.Style`.
		(Contributed by Serhiy Storchaka in :gh:`68166`.)

		* Add the :meth:`!after_info` method for Tkinter widgets.
		(Contributed by Cheryl Sabella in :gh:`77020`.)

		traceback
		---------

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40 changes: 40 additions & 0 deletions 40 Lib/test/test_tkinter/test_misc.py

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -232,6 +232,46 @@ def callback():
		with self.assertRaises(tkinter.TclError):
		root.tk.call('after', 'info', idle1)

		def test_after_info(self):
		root = self.root

		# No events.
		self.assertEqual(root.after_info(), ())

		# Add timer.
		timer = root.after(1, lambda: 'break')

		# With no parameter, it returns a tuple of the event handler ids.
		self.assertEqual(root.after_info(), (timer, ))
		root.after_cancel(timer)

		timer1 = root.after(5000, lambda: 'break')
		timer2 = root.after(5000, lambda: 'break')
		idle1 = root.after_idle(lambda: 'break')
		# Only contains new events and not 'timer'.
		self.assertEqual(root.after_info(), (idle1, timer2, timer1))

		# With a parameter returns a tuple of (script, type).
		timer1_info = root.after_info(timer1)
		self.assertEqual(len(timer1_info), 2)
		self.assertEqual(timer1_info[1], 'timer')
		idle1_info = root.after_info(idle1)
		self.assertEqual(len(idle1_info), 2)
		self.assertEqual(idle1_info[1], 'idle')

		root.after_cancel(timer1)
		with self.assertRaises(tkinter.TclError):
		root.after_info(timer1)
		root.after_cancel(timer2)
		with self.assertRaises(tkinter.TclError):
		root.after_info(timer2)
		root.after_cancel(idle1)
		with self.assertRaises(tkinter.TclError):
		root.after_info(idle1)

		# No events.
		self.assertEqual(root.after_info(), ())

		def test_clipboard(self):
		root = self.root
		root.clipboard_clear()
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15 changes: 15 additions & 0 deletions 15 Lib/tkinter/__init__.py

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Original file line number	Diff line number	Diff line change
Expand Up		@@ -897,6 +897,21 @@ def after_cancel(self, id):
		pass
		self.tk.call('after', 'cancel', id)

		def after_info(self, id=None):
		"""Return information about existing event handlers.

		With no argument, return a tuple of the identifiers for all existing
		event handlers created by the after and after_idle commands for this
		interpreter. If id is supplied, it specifies an existing handler; id
		must have been the return value from some previous call to after or
		after_idle and it must not have triggered yet or been canceled. If the
		id doesn't exist, a TclError is raised. Otherwise, the return value is
		a tuple containing (script, type) where script is a reference to the
		function to be called by the event handler and type is either 'idle'
		or 'timer' to indicate what kind of event handler it is.
		"""
		return self.tk.splitlist(self.tk.call('after', 'info', id))
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		def bell(self, displayof=0):
		"""Ring a display's bell."""
		self.tk.call(('bell',) + self._displayof(displayof))
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1 change: 1 addition & 0 deletions 1 Misc/NEWS.d/next/Library/2018-02-13-10-02-54.bpo-32839.McbVz3.rst

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Original file line number	Diff line number	Diff line change
		@@ -0,0 +1 @@
		Add the :meth:`after_info` method for Tkinter widgets.

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