old_contents: """Generator for Proteus coefficient evaluator"""
  
  from .sfl_printer import SFLPrinter
  from ...code_tools import comment_code, indent_code, PythonCodePrinter
  
  
  coefficient_header = """\
  Proteus Coefficient file generated from Ignition
  """
  
  class_header = """\
  class %{class_name}s(TC_base):
  """
  
  
  class ProteusCoefficientPrinter(SFLPrinter):
      """Generator for Proteus Coefficient evaluator"""
  
      language = 'Python'
      comment_str = '//'
      block_comment_tuple = ('"""', '"""')
  
      def print_file(self, indent=0):
          ret_code = ""
          ret_code += self._print_header(indent)
          ret_code += PythonCodePrinter(self._generator.class_dag)
          return ret_code
  
new_contents: """Generator for Proteus coefficient evaluator"""
  
  from .sfl_printer import SFLPrinter
  from ...code_tools import comment_code, indent_code, PythonCodePrinter
  
  
  coefficient_header = """\
  Proteus Coefficient file generated from Ignition
  """
  
  
  class ProteusCoefficientPrinter(SFLPrinter):
      """Generator for Proteus Coefficient evaluator"""
  
      language = 'Python'
      comment_str = '//'
      block_comment_tuple = ('"""', '"""\n')
  
      def _print_header(self, indent):
          return comment_code(indent_code(coefficient_header, indent),
                              block_comment=self.block_comment_tuple)
  
      def print_file(self, indent=0):
          ret_code = ""
          ret_code += self._print_header(indent)
          ret_code += PythonCodePrinter(self._generator.class_dag).code_str()
          return ret_code
  
subject: Print head, remove code for proteus python class head (use codeobj)