diff -r 204a43c452cc Lib/tkinter/__init__.py
--- a/Lib/tkinter/__init__.py	Sat Oct 22 23:18:31 2016 +0300
+++ b/Lib/tkinter/__init__.py	Wed Oct 26 20:34:07 2016 +0200
@@ -771,6 +771,87 @@
     def bell(self, displayof=0):
         """Ring a display's bell."""
         self.tk.call(('bell',) + self._displayof(displayof))
+    def tk_busy_cget(self, option):
+        '''Queries the tk_busy() configuration options.
+
+        The widget must have been previously made busy by
+        the busy_hold() command. Returns the present value
+        of the specified option. Option may have
+        any of the values accepted by busy_hold().
+        '''
+        return self.tk.call('tk', 'busy', 'cget', self._w, '-'+option)
+    busy_cget = tk_busy_cget
+    def tk_busy_configure(self, cnf=None, **kw):
+        '''Queries or modifies the tk_busy() configuration options.
+
+        The widget must have been previously made busy by
+        busy_hold(). Options may have any of the values accepted by
+        busy_hold().
+        Please note that the option database is referenced by the
+        widget. For example, if a Frame widget is to be made busy,
+        the busy cursor can be specified for it by:
+
+            w.option_add("*Frame.BusyCursor", "gumby")
+        '''
+        if kw:
+            cnf = _cnfmerge((cnf, kw))
+        elif cnf:
+            cnf = _cnfmerge(cnf)
+        if cnf is None:
+            return self._getconfigure(
+                        'tk', 'busy', 'configure', self._w)
+        if isinstance(cnf, str):
+            return self._getconfigure1(
+                        'tk', 'busy', 'configure', self._w, '-'+cnf)
+        self.tk.call((
+            'tk', 'busy', 'configure', self._w) + self._options(cnf))
+    tk_busy_config = busy_configure = busy_config = tk_busy_configure
+    def tk_busy_current(self, pattern=None):
+        '''Returns all widgets that are currently busy.
+
+        If a pattern is given, only busy widgets whose path names
+        match PATTERN are returned.
+        '''
+        return [self._nametowidget(x) for x in
+                self.tk.splitlist(self.tk.call(
+                   'tk', 'busy', 'current', pattern))]
+    busy_current = tk_busy_current
+    def tk_busy_forget(self):
+        '''Releases tk_busy() resources for this widget.
+
+        Releases resources allocated by the busy() command for
+        this widget, including the transparent window.
+        User events will again be received by the widget. Resources
+        are also released when the widget is destroyed. The widget
+        must have been specified in the busy_hold() operation,
+        otherwise an exception is raised.
+        '''
+        self.tk.call('tk', 'busy', 'forget', self._w)
+    busy_forget = tk_busy_forget
+    def tk_busy_hold(self, **kw):
+        '''Makes this widget (and its child widgets) appear busy.
+
+        A transparent window is put in front of the specified widget.
+        This transparent window is mapped the next time
+        idle tasks are processed, and the specified
+        widget and its descendants will be blocked from user
+        interactions. Normally update() should be called immediately
+        afterward to insure that the hold operation is in effect before
+        the application starts its processing. The following
+        configuration options are valid: cursor
+        '''
+        self.tk.call((
+                'tk', 'busy', 'hold', self._w) + self._options(kw))
+    tk_busy = busy_hold = busy = tk_busy_hold
+    def tk_busy_status(self):
+        '''Returns the busy status of this widget.
+
+        If the widget presently can not receive user interactions,
+        True is returned, otherwise False.
+        '''
+        return self.tk.getboolean(self.tk.call(
+                'tk', 'busy', 'status', self._w))
+    busy_status = tk_busy_status
 
     # Clipboard handling:
     def clipboard_get(self, **kw):
diff -r 204a43c452cc Lib/tkinter/test/test_tkinter/test_misc.py
--- a/Lib/tkinter/test/test_tkinter/test_misc.py	Sat Oct 22 23:18:31 2016 +0300
+++ b/Lib/tkinter/test/test_tkinter/test_misc.py	Wed Oct 26 20:34:07 2016 +0200
@@ -20,6 +20,31 @@
         for name in str(b).split('.'):
             self.assertFalse(name.isidentifier(), msg=repr(name))
 
+    def test_tk_busy(self):
+        root = self.root
+        root.tk_busy_hold(cursor='gumby')
+        self.assertEqual(root.tk_busy_cget('cursor'), 'gumby')
+        root.tk_busy_configure(cursor='heart')
+        self.assertIn('heart', root.tk_busy_configure()['cursor'])
+        self.assertRaisesRegex(tkinter.TclError,
+                    'unknown option "-spam"',
+                    root.tk_busy_configure, spam='eggs')
+        self.assertTrue(root.tk_busy_status())
+        self.assertIn(root, root.tk_busy_current())
+        self.assertNotIn(root, root.tk_busy_current('spam'))
+        root.tk_busy_forget()
+        self.assertRaisesRegex(tkinter.TclError,
+                    'can\'t find busy window "."',
+                    root.busy_configure)
+        self.assertRaisesRegex(tkinter.TclError,
+                    'can\'t find busy window "."',
+                    root.busy_cget, 'cursor')
+        self.assertRaisesRegex(tkinter.TclError,
+                    'can\'t find busy window "."',
+                    root.busy_forget)
+        self.assertFalse(root.busy_status())
+        self.assertFalse(root.busy_current())
+
     def test_tk_setPalette(self):
         root = self.root
         root.tk_setPalette('black')