code: def __init__(self, reg_lambda):
      super().__init__(p=2.0, reg_lambda=reg_lambda)
  
imports: from caffe2.python import core, utils
  import numpy
label_desc: Use image node_id 1 to create a new SparseL2Norm object from inherited base classes: SparseLpNorm with example: obj = SparseL2Norm(reg_lambda)