old_contents: """
  This module implements the Vector class (a wrapper for Matrix).
  
  Copyright 2020--2021 Michael Hayes, UCECE
  """
  
  from __future__ import division
  from .matrix import Matrix
  from .sym import sympify
  from .expr import expr
  
  class Vector(Matrix):
  
      def __new__(cls, *args, **assumptions):
  
          if len(args) == 2:
              return super(Vector, cls).__new__(cls, (expr(args[0], **aassumptions).expr, expr(args[1], **assumptions).expr))
  
          args = [expr(arg, **assumptions).sympy for arg in args[0]]
  
          return super(Vector, cls).__new__(cls, args)
  
  
  
new_contents: """
  This module implements the Vector class (a wrapper for Matrix).
  
  Copyright 2020--2021 Michael Hayes, UCECE
  """
  
  from __future__ import division
  from .matrix import Matrix
  from .sym import sympify
  from .expr import expr
  
  class Vector(Matrix):
  
      def __new__(cls, *args, **assumptions):
  
          if len(args) == 2:
              return super(Vector, cls).__new__(cls, (expr(args[0], **assumptions).expr, expr(args[1], **assumptions).expr))
  
          args = [expr(arg, **assumptions).sympy for arg in args[0]]
  
          return super(Vector, cls).__new__(cls, args)
  
  
  
subject: Fix typo