code: def ifnone(a, b):
      "`a` if `a` is not None, otherwise `b`."
      return b if a is None else a
  
imports: import numpy
  import paddle
  import paddle.nn
  import paddle.nn.functional
  from paddle.vision.models import resnet101
  from .None import utils
label_desc: Use image node_id 3 for calling a global function with example usage: ifnone(a, b) and returns: unknown