commit e1847ea4a9bdc7549893091a63e14f2afbdecc32
author Cheryl Sabella <cheryl.sabella@gmail.com> Sun Sep 10 02:02:14 2017 -0400
committer Mariatta <Mariatta@users.noreply.github.com> Sat Sep 09 23:02:14 2017 -0700
tree 0ea4debd045babcd281289f03d18df682e791c37
parent ae16b9966da1ac083796ecbffff004e3060b7731

bpo-25684: ttk.OptionMenu radiobuttons weren't unique (GH-2276) (GH-2960)

ttk.OptionMenu radiobuttons weren't unique 
between instances of OptionMenu.
(cherry picked from commit a568e5273382a5dca0c27274f7d8e34c41a87d4d)

Lib/lib-tk/test/test_ttk/test_extensions.py

diff --git a/Lib/lib-tk/test/test_ttk/test_extensions.py b/Lib/lib-tk/test/test_ttk/test_extensions.py
index 57ffddd..70b2f9c 100644
--- a/Lib/lib-tk/test/test_ttk/test_extensions.py
+++ b/Lib/lib-tk/test/test_ttk/test_extensions.py
@@ -284,6 +284,31 @@
 
         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)
 

Lib/lib-tk/ttk.py

diff --git a/Lib/lib-tk/ttk.py b/Lib/lib-tk/ttk.py
index 77c93b1..6da1eb1 100644
--- a/Lib/lib-tk/ttk.py
+++ b/Lib/lib-tk/ttk.py
@@ -1614,7 +1614,8 @@
         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)