python
diff --git a/‎Lib/lib-tk/test/test_ttk/test_extensions.py‎
Lines changed: 25 additions & 0 deletions b/‎Lib/lib-tk/test/test_ttk/test_extensions.py‎
Lines changed: 25 additions & 0 deletions
diff --git a/‎Lib/lib-tk/ttk.py‎
Lines changed: 2 additions & 1 deletion b/‎Lib/lib-tk/ttk.py‎
Lines changed: 2 additions & 1 deletion
diff --git a/‎Misc/ACKS‎
Lines changed: 1 addition & 0 deletions b/‎Misc/ACKS‎
Lines changed: 1 addition & 0 deletions
diff --git a/‎Misc/NEWS.d/next/Library/2017-07-17-11-35-00.bpo-25684.usELVx.rst‎
Lines changed: 2 additions & 0 deletions b/‎Misc/NEWS.d/next/Library/2017-07-17-11-35-00.bpo-25684.usELVx.rst‎
Lines changed: 2 additions & 0 deletions
@@ -284,6 +284,31 @@ def cb_test(item):
 
         optmenu.destroy()
 
+    def test_unique_radiobuttons(self):
+        # check that radiobuttons are unique across instances (bpo25684)
+        items = ('a', 'b', 'c')
+        default = 'a'
+        optmenu = ttk.OptionMenu(self.root, self.textvar, default, *items)
+        textvar2 = tkinter.StringVar(self.root)
+        optmenu2 = ttk.OptionMenu(self.root, textvar2, default, *items)
+        optmenu.pack()
+        optmenu.wait_visibility()
+        optmenu2.pack()
+        optmenu2.wait_visibility()
+        optmenu['menu'].invoke(1)
+        optmenu2['menu'].invoke(2)
+        optmenu_stringvar_name = optmenu['menu'].entrycget(0, 'variable')
+        optmenu2_stringvar_name = optmenu2['menu'].entrycget(0, 'variable')
+        self.assertNotEqual(optmenu_stringvar_name,
+                            optmenu2_stringvar_name)
+        self.assertEqual(self.root.tk.globalgetvar(optmenu_stringvar_name),
+                         items[1])
+        self.assertEqual(self.root.tk.globalgetvar(optmenu2_stringvar_name),
+                         items[2])
+
+        optmenu.destroy()
+        optmenu2.destroy()
+
 
 tests_gui = (LabeledScaleTest, OptionMenuTest)
 
 
@@ -1614,7 +1614,8 @@ def set_menu(self, default=None, *values):
         menu.delete(0, 'end')
         for val in values:
             menu.add_radiobutton(label=val,
-                command=Tkinter._setit(self._variable, val, self._callback))
+                command=Tkinter._setit(self._variable, val, self._callback),
+                variable=self._variable)
 
         if default:
             self._variable.set(default)
 
@@ -1229,6 +1229,7 @@ James Rutherford
 Chris Ryland
 Constantina S.
 Matthieu S
+Cheryl Sabella
 Patrick Sabin
 Sébastien Sablé
 Suman Saha
 
@@ -0,0 +1,2 @@
+Change ``ttk.OptionMenu`` radiobuttons to be unique across instances of
+``OptionMenu``.
Original file line number	Diff line number	Diff line change
`@@ -0,0 +1,2 @@`
	`1`	+Change ``ttk.OptionMenu`` radiobuttons to be unique across instances of
	`2`	+``OptionMenu``.