code: def __init__(self, reduction="mean"):
      super(BCELoss, self).__init__()
      self.reduction = reduction
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import numpy
  import paddle
  from paddle import nn
  import paddle.nn.functional
label_desc: Use image node_id 1 to create a new BCELoss object from inherited base classes: nn with example: obj = BCELoss(reduction)