code: def test_data_csv_png_20():
      with generate_csv_png("test.csv", 20, 14) as csvfilename:
          yield csvfilename
  
file_path: nnabla/python/test/utils/conftest.py
imports: from __future__ import print_function
  import pytest
  from contextlib import contextmanager
  from shutil import rmtree
  import numpy
  import os
  import tempfile
  import warnings
  from nnabla.utils.image_utils import imsave
label_desc: Use image node_id 5 for calling a global function with example usage: test_data_csv_png_20() without return types