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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 allow_bold_toggled(self, settings, key, user_data):
 """If the gconf var allow_bold is changed, this method will be called and will change the VTE terminal o. displaying characters in bold font. """

        for term in self.guake.notebook_manager.iter_terminals():
            term.set_allow_bold(settings.get_boolean(key))