Lib/keyword.py

   1 #! /usr/bin/env python
   2
   3 """Keywords (from "graminit.c")
   4
   5 This file is automatically generated; please don't muck it up!
   6
   7 To update the symbols in this file, 'cd' to the top directory of
   8 the python source tree after building the interpreter and run:
   9
  10     python Lib/keyword.py
  11 """
  12
  13 __all__ = ["iskeyword", "kwlist"]
  14
  15 kwlist = [
  16 #--start keywords--
  17         'False',
  18         'None',
  19         'True',
  20         'and',
  21         'as',
  22         'assert',
  23         'break',
  24         'class',
  25         'continue',
  26         'def',
  27         'del',
  28         'elif',
  29         'else',
  30         'except',
  31         'finally',
  32         'for',
  33         'from',
  34         'global',
  35         'if',
  36         'import',
  37         'in',
  38         'is',
  39         'lambda',
  40         'nonlocal',
  41         'not',
  42         'or',
  43         'pass',
  44         'raise',
  45         'return',
  46         'try',
  47         'while',
  48         'with',
  49         'yield',
  50 #--end keywords--
  51         ]
  52
  53 iskeyword = frozenset(kwlist).__contains__
  54
  55 def main():
  56     import sys, re
  57
  58     args = sys.argv[1:]
  59     iptfile = args and args[0] or "Python/graminit.c"
  60     if len(args) > 1: optfile = args[1]
  61     else: optfile = "Lib/keyword.py"
  62
  63     # scan the source file for keywords
  64     fp = open(iptfile)
  65     strprog = re.compile('"([^"]+)"')
  66     lines = []
  67     for line in fp:
  68         if '{1, "' in line:
  69             match = strprog.search(line)
  70             if match:
  71                 lines.append("        '" + match.group(1) + "',\n")
  72     fp.close()
  73     lines.sort()
  74
  75     # load the output skeleton from the target
  76     fp = open(optfile)
  77     format = fp.readlines()
  78     fp.close()
  79
  80     # insert the lines of keywords
  81     try:
  82         start = format.index("#--start keywords--\n") + 1
  83         end = format.index("#--end keywords--\n")
  84         format[start:end] = lines
  85     except ValueError:
  86         sys.stderr.write("target does not contain format markers\n")
  87         sys.exit(1)
  88
  89     # write the output file
  90     fp = open(optfile, 'w')
  91     fp.write(''.join(format))
  92     fp.close()
  93
  94 if __name__ == "__main__":
  95     main()