code: def test_pandas_empty():
      df = pd.DataFrame(
          {"x": [1, 2, 3], "y": ["a" * 100, "b" * 100, "c" * 100]},
          index=[10, 20, 30],
      )
      empty = df.head(0)
  
      assert sizeof(empty) > 0
      assert sizeof(empty.x) > 0
      assert sizeof(empty.y) > 0
      assert sizeof(empty.index) > 0
  
imports: from __future__ import annotations
  import os
  import sys
  from array import array
  import pytest
  from dask.multiprocessing import get_context
  from dask.sizeof import sizeof
  from dask.utils import funcname
label_desc: Use image node_id 15 for calling a global function with example usage: test_pandas_empty() without return types