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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 configure(self, ns, mappings=None, **kwargs):
 """ Apply mappings to a namespace. """

        if mappings is None:
            mappings = dict()
        mappings.update(kwargs)

        for operation, definition in mappings.items():
            try:
                configure_func = self._find_func(operation)
            except AttributeError:
                pass
            else:
                configure_func(ns, self._make_definition(definition))