tailbot.py 文件源码

def try_seek(fd, offset):
    try:
        if offset is None:
            os.lseek(fd, 0, os.SEEK_END)
        elif offset >= 0:
            os.lseek(fd, offset, os.SEEK_SET)
        else:
            os.lseek(fd, offset, os.SEEK_END)
    except OSError as ose:
        if ose.args[0] != errno.ESPIPE:
            raise