code: def get_operator(self):
      def l1_norm(x, axis=None, keepdims=False):
          return np.sum(np.abs(x), axis=axis, keepdims=keepdims)
  
      return l1_norm
  
imports: import scipy
  from ._op_reqs import *
label_desc: Use image node_id 2 for calling the reduce_l1_norm obj's underlying member method code with example usage: obj.get_operator() and returns: l1_norm, np