class_docstr: A penalty that does not penalize.
class_docstr_tok: ["A","penalty","that","does","not","penalize","."]
code: def func(self, params):
      if params.ndim == 2:
          return np.zeros(params.shape[1:])
      else:
          return 0
  
imports: import numpy
label_desc: Use image node_id 2 for calling the NonePenalty obj's underlying member method code with example usage: obj.func(params) and returns: np, int