text: """
  
  Module to define exceptions to be used in sympy.polys.matrices modules and
  classes.
  
  Ideally all exceptions raised in these modules would be defined and documented
  here and not e.g. imported from matrices. Also ideally generic exceptions like
  ValueError/TypeError would not be raised anywhere.
  
  """
  
  from sympy.matrices.common import (NonInvertibleMatrixError,
      NonSquareMatrixError, ShapeError)
  
  
  class DDMError(Exception):
      """Base class for errors raised by DDM"""
      pass
  
  
  class DDMBadInputError(DDMError):
      """list of lists is inconsistent with shape"""
      pass
  
  
  class DDMDomainError(DDMError):
      """domains do not match"""
      pass
  
  
  class DDMShapeError(DDMError):
      """shapes are inconsistent"""
      pass
  
  
  __all__ = [
      'DDMError', 'DDMShapeError', 'DDMDomainError',
  
      'NonSquareMatrixError', 'NonInvertibleMatrixError', 'ShapeError',
  ]
  