#! /usr/bin/env python import osimport reimport sys try:    __file__except NameError:    __file__ = sys.argv[0] tools = os.path.dirname(os.path.abspath(__file__))Doc = os.path.dirname(tools)src = os.path.dirname(Doc)patchlevel_h = os.path.join(src, "Include", "patchlevel.h") # This won't pick out all #defines, but it will pick up the ones we# care about.rx = re.compile(r"\s*#define\s+([a-zA-Z][a-zA-Z_0-9]*)\s+([a-zA-Z_0-9]+)") d = {}f = open(patchlevel_h)for line in f:    m = rx.match(line)    if m is not None:        name, value = m.group(1, 2)        d[name] = valuef.close() release = "%s.%s" % (d["PY_MAJOR_VERSION"], d["PY_MINOR_VERSION"])micro = int(d["PY_MICRO_VERSION"])shortversion = releaseif micro != 0:    release += "." + str(micro)level = d["PY_RELEASE_LEVEL"] suffixes = {    "PY_RELEASE_LEVEL_ALPHA": "a",    "PY_RELEASE_LEVEL_BETA":  "b",    "PY_RELEASE_LEVEL_GAMMA": "c",    } releaseinfo = ""if level != "PY_RELEASE_LEVEL_FINAL":    releaseinfo = suffixes[level] + str(int(d["PY_RELEASE_SERIAL"])) def write_file(name, text):    """Write text to a file if the file doesn't exist or if text    differs from any existing content."""    if os.path.exists(name):        f = open(name, "r")        s = f.read()        f.close()        if s == text:            return    f = open(name, "w")    f.write(text)    f.close() patchlevel_tex = os.path.join(Doc, "commontex", "patchlevel.tex") write_file(patchlevel_tex,           "%% This file is generated by ../tools/getversioninfo;\n"           "%% do not edit manually.\n"           "\n"           "\\release{%s}\n"           "\\setreleaseinfo{%s}\n"           "\\setshortversion{%s}\n"           % (release, releaseinfo, shortversion)) print release + releaseinfo