multipartform.py 文件源码

def choose_boundary():
    global _prefix

    if _prefix is None:
        hostid = socket.gethostbyname(socket.gethostname())

        try:
            uid = `os.getuid()`
        except:
            uid = '1'
        try:
            pid = `os.getpid()`
        except:
            pid = '1'

        _prefix = hostid + '.' + uid + '.' + pid

    timestamp = '%.3f' % time.time()
    seed = `random.randint(0, 32767)`
    return _prefix + '.' + timestamp + '.' + seed