Add initial values to variables to avoid crash in __del__
diff --git a/Lib/tkinter/Tkinter.py b/Lib/tkinter/Tkinter.py
index b241f06..f43e3d6 100755
--- a/Lib/tkinter/Tkinter.py
+++ b/Lib/tkinter/Tkinter.py
@@ -76,6 +76,7 @@
_varnum = 0
class Variable:
+ _default = ""
def __init__(self, master=None):
global _default_root
global _varnum
@@ -85,6 +86,7 @@
self._tk = _default_root.tk
self._name = 'PY_VAR' + `_varnum`
_varnum = _varnum + 1
+ self.set(self._default)
def __del__(self):
self._tk.globalunsetvar(self._name)
def __str__(self):
@@ -93,24 +95,28 @@
return self._tk.globalsetvar(self._name, value)
class StringVar(Variable):
+ _default = ""
def __init__(self, master=None):
Variable.__init__(self, master)
def get(self):
return self._tk.globalgetvar(self._name)
class IntVar(Variable):
+ _default = "0"
def __init__(self, master=None):
Variable.__init__(self, master)
def get(self):
return self._tk.getint(self._tk.globalgetvar(self._name))
class DoubleVar(Variable):
+ _default = "0.0"
def __init__(self, master=None):
Variable.__init__(self, master)
def get(self):
return self._tk.getdouble(self._tk.globalgetvar(self._name))
class BooleanVar(Variable):
+ _default = "false"
def __init__(self, master=None):
Variable.__init__(self, master)
def get(self):