def __init__(self, parent):
         wxPanel.__init__(self, parent, -1)
 
-        self.SetAutoLayout(true)
+        self.SetAutoLayout(True)
         EVT_BUTTON(self, 100, self.OnButton)
 
         self.panelA = wxWindow(self, -1, wxPyDefaultPosition, wxPyDefaultSize, wxSIMPLE_BORDER)
 
 
 overview = Layoutf.__doc__
+
+
+
+
+if __name__ == '__main__':
+    import sys,os
+    import run
+    run.main(['', os.path.basename(sys.argv[0])])
+