old_contents: #! /usr/bin/env python
  #
  #  Non-terminal symbols of Python grammar (from "graminit.h")
  #
  #  This file is automatically generated; please don't muck it up!
  #
  #  To update the symbols in this file, 'cd' to the top directory of
  #  the python source tree after building the interpreter and run:
  #
  #    PYTHONPATH=Lib:Modules ./python Lib/symbol.py
  #
  #  (this path allows the import of string.py, token.py, and regexmodule.so
  #  for a site with no installation in place)
  
  #--start constants--
  single_input = 256
  file_input = 257
  eval_input = 258
  funcdef = 259
  parameters = 260
  varargslist = 261
  fpdef = 262
  fplist = 263
  stmt = 264
  simple_stmt = 265
  small_stmt = 266
  expr_stmt = 267
  print_stmt = 268
  del_stmt = 269
  pass_stmt = 270
  flow_stmt = 271
  break_stmt = 272
  continue_stmt = 273
  return_stmt = 274
  raise_stmt = 275
  import_stmt = 276
  dotted_name = 277
  global_stmt = 278
  exec_stmt = 279
  assert_stmt = 280
  compound_stmt = 281
  if_stmt = 282
  while_stmt = 283
  for_stmt = 284
  try_stmt = 285
  except_clause = 286
  suite = 287
  test = 288
  and_test = 289
  not_test = 290
  comparison = 291
  comp_op = 292
  expr = 293
  xor_expr = 294
  and_expr = 295
  shift_expr = 296
  arith_expr = 297
  term = 298
  factor = 299
  power = 300
  atom = 301
  lambdef = 302
  trailer = 303
  subscriptlist = 304
  subscript = 305
  sliceop = 306
  exprlist = 307
  testlist = 308
  dictmaker = 309
  classdef = 310
  arglist = 311
  argument = 312
  #--end constants--
  
  sym_name = {}
  for _name, _value in globals().items():
      if type(_value) is type(0):
  	sym_name[_value] = _name
  
  
  def main():
      import sys
      import token
      if len(sys.argv) == 1:
  	sys.argv = sys.argv + ["Include/graminit.h", "Lib/symbol.py"]
      token.main()
  
  if __name__ == "__main__":
      main()
  
  #
  #  end of file
  
new_contents: #! /usr/bin/env python
  #
  #  Non-terminal symbols of Python grammar (from "graminit.h")
  #
  #  This file is automatically generated; please don't muck it up!
  #
  #  To update the symbols in this file, 'cd' to the top directory of
  #  the python source tree after building the interpreter and run:
  #
  #    python Lib/symbol.py
  
  #--start constants--
  single_input = 256
  file_input = 257
  eval_input = 258
  funcdef = 259
  parameters = 260
  varargslist = 261
  fpdef = 262
  fplist = 263
  stmt = 264
  simple_stmt = 265
  small_stmt = 266
  expr_stmt = 267
  print_stmt = 268
  del_stmt = 269
  pass_stmt = 270
  flow_stmt = 271
  break_stmt = 272
  continue_stmt = 273
  return_stmt = 274
  raise_stmt = 275
  import_stmt = 276
  dotted_name = 277
  global_stmt = 278
  exec_stmt = 279
  assert_stmt = 280
  compound_stmt = 281
  if_stmt = 282
  while_stmt = 283
  for_stmt = 284
  try_stmt = 285
  except_clause = 286
  suite = 287
  test = 288
  and_test = 289
  not_test = 290
  comparison = 291
  comp_op = 292
  expr = 293
  xor_expr = 294
  and_expr = 295
  shift_expr = 296
  arith_expr = 297
  term = 298
  factor = 299
  power = 300
  atom = 301
  lambdef = 302
  trailer = 303
  subscriptlist = 304
  subscript = 305
  sliceop = 306
  exprlist = 307
  testlist = 308
  dictmaker = 309
  classdef = 310
  arglist = 311
  argument = 312
  #--end constants--
  
  sym_name = {}
  for _name, _value in globals().items():
      if type(_value) is type(0):
  	sym_name[_value] = _name
  
  
  def main():
      import sys
      import token
      if len(sys.argv) == 1:
  	sys.argv = sys.argv + ["Include/graminit.h", "Lib/symbol.py"]
      token.main()
  
  if __name__ == "__main__":
      main()
  
subject: Remove outdated comments.