关于msgpack解包和打包

Question

问题遇到的现象和发生背景

我有多个msgpack文件，想把他们整合成一个msgpack，请问如何处理这个报错。

问题相关代码

import msgpack
with open('/home/suned/data/giscup_2021_1/totalmsgpack/total.msgpack','wb') as f1:
    for i in range(1,32):
        file_name = f"202008{i:02}.msgpack"
        with open(f'/home/suned/data/giscup_2021_1/msgpack/{file_name}','rb') as f2:
            unpacked = msgpack.unpackb(f2.read())
            f1.write(unpacked)

运行结果及报错内容

TypeError                                 Traceback (most recent call last)
/tmp/ipykernel_132397/78171065.py in <module>
      5         with open(f'/home/suned/data/giscup_2021_1/msgpack/{file_name}','rb') as f2:
      6             unpacked = msgpack.unpackb(f2.read())
----> 7             f1.write(unpacked)
      8 
      9 

TypeError: a bytes-like object is required, not 'list'

Answer 1

先看看 print(type(unpacked)) 是啥？

有些文档， 貌似msgpack 的写入用的是dump方法

with open('data.txt', 'wb') as f1:
    msgpack.dump(var, f1) # 存储数据