code: def to_tuple(x):
      return x if isinstance(x, abc.Iterable) else (x, x)
  
file_path: PaddleSeg/contrib/DomainAdaptation/datasets/cityscapes_noconfig.py
imports: import os
  import random
  import numpy
  import collections.abc
  from PIL import Image, ImageOps, ImageFilter, ImageFile
  import paddle
  from paddle import io
  import paddleseg.transforms.functional
label_desc: Use image node_id 1 for calling a global function with example usage: to_tuple(x) and returns: unknown