ImportError：无法导入名称UNAUTHORIZED_CODES

Question

我正在使用mongoengine ORM，但我最近将mongoengie升级到了0.9，这让我将pymongo降级到了2.8版本。每当我尝试使用的代码

from mongoengine import * 

connect('dbName') 

我得到这个错误

/usr/bin/python2.7 /root/Documents/Projects/BetCafe/main/tester.py 
Traceback (most recent call last): 
File "/root/Documents/Projects/BetCafe/main/tester.py", line 1, in <module> 
from mongoengine import * 

File "/usr/local/lib/python2.7/dist-packages/mongoengine/__init__.py", line 3, in <module> 
import fields 
File "/usr/local/lib/python2.7/dist-packages/mongoengine/fields.py", line 19, in <module> 
import gridfs 
File "/usr/lib/python2.7/dist-packages/gridfs/__init__.py", line 32, in <module> 
from pymongo.common import UNAUTHORIZED_CODES, validate_string  
ImportError: cannot import name UNAUTHORIZED_CODES 

Process finished with exit code 1 

我试图重新安装两个pymongo和mongoengine要对数据库的连接，但他们都没有工作

任何帮助将不胜感激。

Answer 1

您似乎有一个新版本的GridFS（它需要UNAUTHORIZED_CODES常量，在PyMongo since version 3.1中），而您的降级版本的Pymongo 2.8版本。

尝试从/usr/lib/python2.7/dist-packages/删除目录gridfs,bson和pymongo，然后再次安装PyMongo。