用泡菜。dump—TypeError:必须为str，不能为bytes

我正在使用python3.3，当我试图pickle一个简单的字典时，我有一个神秘的错误。

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)

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

130015

小开

我也有同样的问题。在Python 3中，必须指定二进制模式'wb'， 'rb'，而在Python 2x中，不需要它们。当你遵循基于Python 2x的教程时，这就是你在这里的原因。

import pickle


class MyUser(object):
def __init__(self,name):
self.name = name


user = MyUser('Peter')


print("Before serialization: ")
print(user.name)
print("------------")
serialized = pickle.dumps(user)
filename = 'serialized.native'


with open(filename,'wb') as file_object:
file_object.write(serialized)


with open(filename,'rb') as file_object:
raw_data = file_object.read()


deserialized = pickle.loads(raw_data)




print("Loading from serialized file: ")
user2 = deserialized
print(user2.name)
print("------------")