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/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)