@property
  def columns(self):
    return self.__columns
:param s:
dataset/ETHPy150Open evanbrumley/django-report-tools/report_tools/renderers/googlecharts/gviz_api/gviz_api.py/DataTable.columns--crossover with--dataset/ETHPy150Open algorhythms/LeetCode/205 Isomorphic Strings.py/Solution.isIsomorphic