code: def tsframe():
      return DataFrame(
          np.random.default_rng(2).standard_normal((30, 4)),
          columns=Index(list("ABCD"), dtype=object),
          index=date_range("2000-01-01", periods=30, freq="B"),
      )
  
file_path: pandas/pandas/tests/groupby/conftest.py
imports: import numpy
  import pytest
  from pandas import DataFrame, Index, Series, date_range
  from pandas.core.groupby.base import reduction_kernels, transformation_kernels
label_desc: Use image node_id 3 for calling a global function with example usage: tsframe() and returns: DataFrame