code: def test_filter_islist():
      for lst in [[], list(), [1, 2, 3], tuple(), (1, 2, 3)]:
          assert filter_islist(lst)
      for n in [
          None,
          1,
          "a",
          "asdfsad",
          1.1,
          True,
          np.nan,
          np.array([1, 2, 3]),
          pd.DataFrame(),
          pd.DataFrame({"a": [1, 2]}),
          pd.Series([1, 2]),
      ]:
          assert filter_islist(n) is False
  
file_path: tslumen/tests/unit/test_jinja_utils.py
imports: from datetime import datetime
  import pytest
  import numpy
  import pandas
  import jinja2
  from tslumen.jinja_utils import *
label_desc: Use image node_id 6 for calling a global function with example usage: test_filter_islist() without return types