code: def append_special_case(df_in, args_in, args_expect, df_expect):
      special_cases.append((df_in, args_in, args_expect, df_expect))
  
imports: import plotly.express
  import plotly.graph_objects
  import pandas
  import numpy
  from plotly.express._core import build_dataframe, _is_col_list
  from pandas.testing import assert_frame_equal
  import pytest
  import warnings
label_desc: Use image node_id 7 for calling a global function with example usage: append_special_case(df_in, args_in, args_expect, df_expect) without return types