code: def test_is_int_index(int_type, int_size):
      index = pd.Index(np.arange(100), dtype=f"{int_type}{int_size}")
      assert is_int_index(index)
      assert not is_float_index(index)
  
file_path: statsmodels/statsmodels/compat/tests/test_pandas.py
imports: from statsmodels.compat.pandas import PD_LT_1_4, is_float_index, is_int_index
  import numpy
  import pandas
  import pytest
label_desc: Use image node_id 1 for calling a global function with example usage: test_is_int_index(int_type, int_size) without return types