python 读取二进制文件

发布时间:2019-09-21 11:00:14编辑:auto阅读(1894)

    固定大小

    from functools import partial
    
    i = 0
    f = open('lgtm-monitor.dat', 'rb')
    f2 = open('f.txt', 'w')
    records = iter(partial(f.read, 2), b'')         # 每次2字节
    for r in records:
        j = 0
        r_int = int.from_bytes(r, byteorder='big')  #将 byte转化为 int
        i += 1
        print('i={0}:{1}'.format(i, r_int))
        f2.write(str(r_int)+' ')   
        if 8==i:
            f2.write('\n')
            i = 0
            break
    f.close()
    f2.close()

    二进制文件使用 read( size)

    with open('lgtm-monitor.dat', 'rb') as fp:
        data = fp.read(2)      #type(data) === bytes
        text = int.from_bytes(data, byteorder='big')
    fp.close()

关键字