使用 pickle.dump - TypeError: must be str, not bytes

问题描述

我使用的是 python3.3，在尝试腌制一个简单的字典时遇到了一个神秘的错误.

I'm using python3.3 and I'm having a cryptic error when trying to pickle a simple dictionary.

代码如下:

import os
import pickle
from pickle import *
os.chdir('c:/Python26/progfiles/')

def storvars(vdict):      
    f = open('varstor.txt','w')
    pickle.dump(vdict,f,)
    f.close()
    return

mydict = {'name':'john','gender':'male','age':'45'}
storvars(mydict)

我得到:

Traceback (most recent call last):
  File "C:/Python26/test18.py", line 31, in <module>
    storvars(mydict)
  File "C:/Python26/test18.py", line 14, in storvars
    pickle.dump(vdict,f,)
TypeError: must be str, not bytes

推荐答案

输出文件需要以二进制方式打开:

The output file needs to be opened in binary mode:

f = open('varstor.txt','w')

需要:

f = open('varstor.txt','wb')

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