code: def __call__(self, module, input=None, output=None):
      value = th.sum(th.abs(module.weight)) * self.scale
      self.value += value
  
imports: import torch
  from fnmatch import fnmatch
  from .callbacks import Callback
label_desc: Use image node_id 3 for calling the L1Regularizer obj's underlying member method code with example usage: obj.__call__(module, input, output) without return types