filestore.py 文件源码

def mkstemp(dir):
        for _ in range(5):
            name = os.tempnam(dir)
            try:
                fd = os.open(name, os.O_CREAT | os.O_EXCL | os.O_RDWR, 0600)
            except OSError, why:
                if why.errno != EEXIST:
                    raise
            else:
                return fd, name

        raise RuntimeError('Failed to get temp file after 5 attempts')