code: def is_at_least_one_splittable_variable(self) -> bool:
      if any(self._splittable_variables):
          return True
      else:
          return len(self.splittable_variables()) > 0
  
imports: from operator import gt, le
  from typing import Any, List, Optional, Union
  import numpy
  import pandas
  from .errors import NoSplittableVariableException
  from .splitcondition import SplitCondition
label_desc: Use image node_id 7 for calling the CovariateMatrix obj's underlying member method code with example usage: obj.is_at_least_one_splittable_variable() and returns: True, unknown