code: def test_empty_dataframe():
      df = pd.DataFrame(columns=["a", "b"])
      df[(df.a == 1) & (df.b == 2)]
  
file_path: ray/python/ray/tests/modin/test_modin.py
imports: import sys
  import pytest
  import pandas
  import numpy
  from numpy.testing import assert_array_equal
  from ray.tests.conftest import ray_start_regular_shared
label_desc: Use image node_id 13 for calling a global function with example usage: test_empty_dataframe() without return types