read_rz(输入1，输入你日志的相对目录)，就会得到你日志的最近一行文件：

def read_rz(x, y):    b = -1 * abs(x)    a = open(y, 'rb')    while True:        a.seek(b, 2)        c = a.readlines()        if len(c) > 1:            print(c[-1].decode('utf-8'))            break        b *= 2