使用pickle.dump-TypeError:必须为str，而不是字节 [英] Using pickle.dump - TypeError: must be str, not bytes

问题描述

我正在使用python3.3，并且在尝试腌制一个简单的字典时遇到一个隐秘错误.

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

这是代码:

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

需要以二进制模式打开输出文件:

The output file needs to be opened in binary mode:

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

需要是:

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

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