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Python driver for MongoDB <>

Project description


See the mongo site for more information. See github for the latest source.


Mike Dirolf


Bernie Hackett <>


The PyMongo distribution contains tools for interacting with MongoDB database from Python. The bson package is an implementation of the BSON format for Python. The pymongo package is a native Python driver for MongoDB. The gridfs package is a gridfs implementation on top of pymongo.

PyMongo 3.3 supports MongoDB 2.4, 2.6, 3.0, and 3.2

Support / Feedback

For issues with, questions about, or feedback for PyMongo, please look into our support channels. Please do not email any of the PyMongo developers directly with issues or questions - you’re more likely to get an answer on the mongodb-user list on Google Groups.

Bugs / Feature Requests

Think you’ve found a bug? Want to see a new feature in PyMongo? Please open a case in our issue management tool, JIRA:

Bug reports in JIRA for all driver projects (i.e. PYTHON, CSHARP, JAVA) and the Core Server (i.e. SERVER) project are public.

How To Ask For Help

Please include all of the following information when opening an issue:

  • Detailed steps to reproduce the problem, including full traceback, if possible.

  • The exact python version used, with patch level:

    $ python -c "import sys; print(sys.version)"
  • The exact version of PyMongo used, with patch level:

    $ python -c "import pymongo; print(pymongo.version); print(pymongo.has_c())"
  • The operating system and version (e.g. Windows 7, OSX 10.8, …)

  • Web framework or asynchronous network library used, if any, with version (e.g. Django 1.7, mod_wsgi 4.3.0, gevent 1.0.1, Tornado 4.0.2, …)

Security Vulnerabilities

If you’ve identified a security vulnerability in a driver or any other MongoDB project, please report it according to the instructions here.


PyMongo can be installed with pip:

$ python -m pip install pymongo

Or easy_install from setuptools:

$ python -m easy_install pymongo

You can also download the project source and do:

$ python install

Do not install the “bson” package. PyMongo comes with its own bson package; doing “easy_install bson” installs a third-party package that is incompatible with PyMongo.


PyMongo supports CPython 2.6, 2.7, 3.3+, PyPy, and PyPy3.

Optional dependencies for GSSAPI and TLS:

GSSAPI authentication requires pykerberos on Unix or WinKerberos on Windows. The correct dependency can be installed automatically along with PyMongo:

$ python -m pip install pymongo[gssapi]

TLS / SSL support may require certifi or wincertstore depending on the Python version in use. The necessary dependencies can be installed along with PyMongo:

$ python -m pip install pymongo[tls]

You can install both dependencies automatically with the following command:

$ python -m pip install pymongo[gssapi,tls]

Other optional packages:

  • backports.pbkdf2, improves authentication performance with SCRAM-SHA-1, the default authentication mechanism for MongoDB 3.0+. It especially improves performance on Python older than 2.7.8, or on Python 3 before Python 3.4.

  • monotonic adds support for a monotonic clock, which improves reliability in environments where clock adjustments are frequent. Not needed in Python 3.3+.

Additional dependencies are:

  • (to generate documentation) sphinx

  • (to run the tests under Python 2.6) unittest2


Here’s a basic example (for more see the examples section of the docs):

>>> import pymongo
>>> client = pymongo.MongoClient("localhost", 27017)
>>> db = client.test
>>> db.my_collection
Collection(Database(MongoClient('localhost', 27017), u'test'), u'my_collection')
>>> db.my_collection.insert_one({"x": 10}).inserted_id
>>> db.my_collection.insert_one({"x": 8}).inserted_id
>>> db.my_collection.insert_one({"x": 11}).inserted_id
>>> db.my_collection.find_one()
{u'x': 10, u'_id': ObjectId('4aba15ebe23f6b53b0000000')}
>>> for item in db.my_collection.find():
...     print(item["x"])
>>> db.my_collection.create_index("x")
>>> for item in db.my_collection.find().sort("x", pymongo.ASCENDING):
...     print(item["x"])
>>> [item["x"] for item in db.my_collection.find().limit(2).skip(1)]
[8, 11]


You will need sphinx installed to generate the documentation. Documentation can be generated by running python doc. Generated documentation can be found in the doc/build/html/ directory.


The easiest way to run the tests is to run python test in the root of the distribution. Note that you will need unittest2 to run the tests under Python 2.6.

To verify that PyMongo works with Gevent’s monkey-patching:

$ python gevent

Or with Eventlet’s:

$ python eventlet

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