Can't import MongoClient

Question

I am unable to do this:

from pymongo import MongoClient

I get:

>>> import pymongo
>>> from pymongo import MongoClient
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: cannot import name MongoClient
>>> 

I am able to import pymongo without issues.

I am running mongodb 2.2.3 and Python 2.7 .

I've also tried this:

>>> connection = pymongo.MongoClient()
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'module' object has no attribute 'MongoClient'
>>> 

What am I doing wrong?

Answer 1

That package is probably outdated or broken. Run sudo apt-get purge python-pymongo , then sudo apt-get install python-pip , then finally sudo pip install pymongo .

Answer 2

According to docs , MongoClient was introduced in version 2.4. As you installed pymongo from your distribution repository, it's quite possible it's not the most recent version. Try installing it via PiP (remove the one you have installed first):

pip install pymongo

Answer 3

If you had named your script pymongo.py, which masks the pymongo module from which you are importing.

Rename your script to something else like xyz.py (and delete the pymongo.pyc file if one was created next to it).

Answer 4

I would like to suggest more robust answer:

pip show pymongo

now see where it direct you and from there simply remove the pymongo directory

rm -rf <the dir where pymongo lay>/pymongo*

Now, you can safely install pymongo again:

pip install pymongo

Answer 5

This problem may occur if you have multiple .py programs in the current working directory. Deleting them solved my error. I am not sure of the reason though.

Answer 6

是的，你需要更新使用，检查升级部分说http://api.mongodb.org/python/current/installation.html

   easy_install -U pymongo

Answer 7

If you used pymongo.Connection and encountered error, you should know that after the new updates, you should use pymongo.MongoClient instead. I had this issue so hopefully this will be helpful to someone else.

Answer 8

Python Script

Try it once, into python script run following statement

# try.py

import pymongo

If above statement didn't throw any exception then you need to install pymongo-2.4 , if existing pymongo verion is 2.3

Open terminal

First you need to uninstall old pymongo version

pip uninstall pymongo

Then use following commands to install pymongo-2.4

wget http://pypi.python.org/packages/source/p/pymongo/pymongo-2.4.tar.gz
tar xzf pymongo-2.4.tar.gz
cd pymongo-2.4
python setup.py install

Answer 9

I had the same problem on Ubuntu 16.04.
This solved my problem:

sudo apt-get install build-essential python-dev

sudo apt-get install python-pip

sudo pip install pymongo

Answer 10

Worked for me for conda env

pip uninstall pymongo

then

pip install pymongo

Answer 11

确保你的 python 源文件没有被调用 pymongo.py

Answer 12

将文件名从 pymongo.py 更改为其他名称。

Answer 13

You have a file named queue.py in your project folder. Rename that file, and that should fix the problem.

Answer 14

For newer version of pymongo, you don't need to import MongoClient. Do the following:

import pymongo

client = pymongo.MongoClient("localhost", 27017)
db = client.test_database
db.test_table

You'll get:

Collection(Database(MongoClient(host=['localhost:27017'], document_class=dict, tz_aware=False, connect=True), 'test_database'), 'test_table')

Answer 15

I had the same issue with mypy type checks for the MongoClient class of pymongo . This solved the issue:

from pymongo.mongo_client import MongoClient