code: def __init__(self, ignore_label=None):
      self.ignore_label = ignore_label
  
file_path: chainer/chainer/functions/evaluation/accuracy.py
imports: import numpy
  import six
  from chainer.backends import cuda
  from chainer import function_node
  from chainer.utils import type_check
  import chainerx
label_desc: Use image node_id 1 to create a new Accuracy object from inherited base classes: function_node with example: obj = Accuracy(ignore_label)