def get_namespace(self, uri):
        key = (self, uri)
        if key in self.context.namespaces:
            return self.context.namespaces[key]
        else:
            ns = TemplateNamespace(uri, self.context._copy(),
                                templateuri=uri,
                                calling_uri=self._templateuri)
            self.context.namespaces[key] = ns
            return ns
Generate (key, value) pairs from the config module matching prefix.
dataset/ETHPy150Open cloudera/hue/desktop/core/ext-py/Mako-0.8.1/mako/runtime.py/Namespace.get_namespace--crossover with--dataset/ETHPy150Open CollabQ/CollabQ/.google_appengine/google/appengine/api/lib_config.py/LibConfigRegistry._pairs