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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def updateTitle(self, atitle):
 """ Override so we can append read-only status. """

        if atitle and os.path.exists(atitle):
            if _isInstalled(atitle):
                atitle += '  [installed]'
            elif not os.access(atitle, os.W_OK):
                atitle += '  [read only]'
        super(ConfigObjEparDialog, self).updateTitle(atitle)