python 读取二进制文件

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()