setup.py 文件源码

def get_version(self):
            """extract version number from the b3.egg-info/PKG-INFO file"""
            log.info(">>> parse B3 version")
            pkginfo_file = os.path.join(self.build_exe, 'PKG-INFO')
            pkginfo_version = re.compile(
                r'^\s*Version:\s*(?P<version>(?P<numbers>\d+\.\d+(?:\.\d+)?)(?P<pre_release>(?:a|b|dev|d)\d*)?(?P<suffix>.*?))\s*$',
                re.MULTILINE)
            with open(pkginfo_file, 'r') as f:
                match = pkginfo_version.search(f.read())
                if not match:
                    log.error("could not find version from %s" % pkginfo_file)
                    sys.exit(1)

            current_b3_version_part1 = match.group("numbers")
            current_b3_version_part2 = ""
            if match.group("pre_release"):
                current_b3_version_part2 += match.group("pre_release")
            if match.group("suffix"):
                current_b3_version_part2 += match.group("suffix")

            return current_b3_version_part1, current_b3_version_part2