old_contents: from symengine.lib.symengine_wrapper import ccode, sympify, Basic
  import symengine.lib.symengine_wrapper
  
  class CCodePrinter:
  
      def doprint(self, expr, assign_to=None):
          if not isinstance(assign_to, (Basic, type(None), str)):
              raise TypeError("{0} cannot assign to object of type {1}".format(
                      type(self).__name__, type(assign_to)))
  
          expr = sympify(expr)
          if not assign_to:
              if expr.is_Matrix:
                  raise RuntimeError("Matrices need a assign_to parameter")
              return ccode(expr)
  
          assign_to = str(assign_to)
          if not expr.is_Matrix:
              return "{} = {};".format(assign_to, ccode(expr))
  
          code_lines = []
          for i, element in enumerate(expr):
              code_line = '{}[{}] = {};'.format(assign_to, i, element)
              code_lines.append(code_line)
          return '\n'.join(code_lines)
  
  
  def init_printing(pretty_print=True, use_latex=True):
      if pretty_print:
          if not use_latex:
              raise RuntimeError("Only latex is supported for pretty printing")
          symengine.lib.symengine_wrapper.repr_latex[0] = True
      else:
          symengine.lib.symengine_wrapper.repr_latex[0] = False
  
new_contents: from symengine.lib.symengine_wrapper import ccode, sympify, Basic, repr_latex
  
  class CCodePrinter:
  
      def doprint(self, expr, assign_to=None):
          if not isinstance(assign_to, (Basic, type(None), str)):
              raise TypeError("{0} cannot assign to object of type {1}".format(
                      type(self).__name__, type(assign_to)))
  
          expr = sympify(expr)
          if not assign_to:
              if expr.is_Matrix:
                  raise RuntimeError("Matrices need a assign_to parameter")
              return ccode(expr)
  
          assign_to = str(assign_to)
          if not expr.is_Matrix:
              return "{} = {};".format(assign_to, ccode(expr))
  
          code_lines = []
          for i, element in enumerate(expr):
              code_line = '{}[{}] = {};'.format(assign_to, i, element)
              code_lines.append(code_line)
          return '\n'.join(code_lines)
  
  
  def init_printing(pretty_print=True, use_latex=True):
      if pretty_print:
          if not use_latex:
              raise RuntimeError("Only latex is supported for pretty printing")
          repr_latex[0] = True
      else:
          repr_latex[0] = False
  
subject: fix import error