From d97c01ff2897a1d706b13d3684f8db69c8ea2ef3 Mon Sep 17 00:00:00 2001
From: Serhiy Storchaka <storchaka@gmail.com>
Date: Thu, 26 Dec 2013 20:06:05 +0200
Subject: Issue #20067: Tkinter variables now work when wantobjects is false.

---
 Lib/tkinter/__init__.py                         |  6 +++---
 Lib/tkinter/test/test_tkinter/test_variables.py | 15 +++++++++------
 Misc/NEWS                                       |  2 ++
 3 files changed, 14 insertions(+), 9 deletions(-)

diff --git a/Lib/tkinter/__init__.py b/Lib/tkinter/__init__.py
index 23aec02..95b2581 100644
--- a/Lib/tkinter/__init__.py
+++ b/Lib/tkinter/__init__.py
@@ -220,12 +220,12 @@ class Variable:
             _varnum += 1
         if value is not None:
             self.initialize(value)
-        elif not self._tk.call("info", "exists", self._name):
+        elif not self._tk.getboolean(self._tk.call("info", "exists", self._name)):
             self.initialize(self._default)
     def __del__(self):
         """Unset the variable in Tcl."""
-        if (self._tk is not None and self._tk.call("info", "exists",
-                                                   self._name)):
+        if (self._tk is not None and
+            self._tk.getboolean(self._tk.call("info", "exists", self._name))):
             self._tk.globalunsetvar(self._name)
     def __str__(self):
         """Return the name of the variable in Tcl."""
diff --git a/Lib/tkinter/test/test_tkinter/test_variables.py b/Lib/tkinter/test/test_tkinter/test_variables.py
index 378cc92..fa1f898 100644
--- a/Lib/tkinter/test/test_tkinter/test_variables.py
+++ b/Lib/tkinter/test/test_tkinter/test_variables.py
@@ -24,6 +24,9 @@ class TestBase(unittest.TestCase):
 
 class TestVariable(TestBase):
 
+    def info_exists(self, *args):
+        return self.root.getboolean(self.root.call("info", "exists", *args))
+
     def test_default(self):
         v = Variable(self.root)
         self.assertEqual("", v.get())
@@ -35,21 +38,21 @@ class TestVariable(TestBase):
         self.assertEqual("varname", str(v))
 
     def test___del__(self):
-        self.assertFalse(self.root.call("info", "exists", "varname"))
+        self.assertFalse(self.info_exists("varname"))
         v = Variable(self.root, "sample string", "varname")
-        self.assertTrue(self.root.call("info", "exists", "varname"))
+        self.assertTrue(self.info_exists("varname"))
         del v
-        self.assertFalse(self.root.call("info", "exists", "varname"))
+        self.assertFalse(self.info_exists("varname"))
 
     def test_dont_unset_not_existing(self):
-        self.assertFalse(self.root.call("info", "exists", "varname"))
+        self.assertFalse(self.info_exists("varname"))
         v1 = Variable(self.root, name="name")
         v2 = Variable(self.root, name="name")
         del v1
-        self.assertFalse(self.root.call("info", "exists", "name"))
+        self.assertFalse(self.info_exists("name"))
         # shouldn't raise exception
         del v2
-        self.assertFalse(self.root.call("info", "exists", "name"))
+        self.assertFalse(self.info_exists("name"))
 
     def test___eq__(self):
         # values doesn't matter, only class and name are checked
diff --git a/Misc/NEWS b/Misc/NEWS
index 547f108..c6f5833 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -29,6 +29,8 @@ Core and Builtins
 Library
 -------
 
+- Issue #20067: Tkinter variables now work when wantobjects is false.
+
 - Issue #19020: Tkinter now uses splitlist() instead of split() in configure
   methods.
 
-- 
cgit v0.12