code: def _py_code_variables(lines, executable, lparams, tab):
      
      allparams = executable.ordered_parameters
      if type(executable).__name__ == "Function":
          allparams = allparams + [executable]
  
      for p in allparams:
          _py_code_parameter(lines, p, "invar", lparams, tab)
          if p.direction == "(out)":
              #We need to reverse the order of the indices to match the fortran code
              #generation of the wrapper.
              _py_code_parameter(lines, p, "outvar", lparams, tab)
              _py_code_parameter(lines, p, "indices", lparams, tab)
          else:
              _py_code_parameter(lines, p, "indices", lparams, tab)
              _py_code_parameter(lines, p, "outvar", lparams, tab)
docs: Adds the variable code lines for all the parameters in the executable.
  
      :arg lparams: a list of the local variable declarations made so far that need to be passed
        to the executable when it is called.