def execute(self, handler, arg):
        """
        Execute a callback for each config item in the tree; returns zero if
successful, else -1.
        """
        return lib.zconfig_execute(self._as_parameter_, handler, arg)
def execute ( self , handler , arg ) : return lib . zconfig_execute ( self . _as_parameter_ , handler , arg )
Execute a callback for each config item in the tree; returns zero if
successful, else -1.