setup.py 文件源码

def write_version():
    if newer(VERSION_FILE, PY_VERSION_FILE):
        with open(PY_VERSION_FILE, "w") as f:
            f.write("# GENERATED BY setup.py\n")
            f.write("version = '%s'\n" % (get_version_string()))


# On Darwin, UnixCCompiler uses "-L" for runtime lib paths