old_contents: """This module implements the DiscreteTimeDomainMatrix class for a matrix of
  time-domain expressions.
  
  Copyright 2021 Michael Hayes, UCECE
  
  """
  
  from .matrix import Matrix
  
  class DiscreteTimeDomainMatrix(Matrix):
      from .texpr import DiscreteTimeDomainExpression    
      _typewrap = DiscreteTimeDomainExpression    
  
      def ZT(self):
  
          def func(expr):
              return expr.ZT()
          
          return ZDomainMatrix(self.applyfunc(func))
      
  from .zmatrix import ZDomainMatrix
  
new_contents: """This module implements the DiscreteTimeDomainMatrix class for a matrix of
  time-domain expressions.
  
  Copyright 2021 Michael Hayes, UCECE
  
  """
  
  from .matrix import Matrix
  
  class DiscreteTimeDomainMatrix(Matrix):
      from .nexpr import DiscreteTimeDomainExpression    
      _typewrap = DiscreteTimeDomainExpression    
  
      def ZT(self):
  
          def func(expr):
              return expr.ZT()
          
          return ZDomainMatrix(self.applyfunc(func))
      
  from .zmatrix import ZDomainMatrix
  
subject: Fix impprts