=======
PyMongo
=======
:Info: See `the mongo site <http://www.mongodb.org>`_ for more information. See `github <http://github.com/mongodb/mongo-python-driver/tree>`_ for the latest source.
:Author: Mike Dirolf <mike@10gen.com>
About
=====
The PyMongo distribution contains tools for interacting with the Mongo database from Python.
The ``pymongo`` package is a native Python driver for the Mongo database. The ``gridfs``
package is a `gridfs <http://www.mongodb.org/display/DOCS/GridFS+Specification>`_
implementation on top of ``pymongo``.
Installation
============
If you have `setuptools <http://peak.telecommunity.com/DevCenter/setuptools>`_ installed you should be able to do **easy_install pymongo** to install PyMongo. Otherwise you can download the project source and do **python setup.py install** to install.
Dependencies
============
The PyMongo distribution has been tested on Python 2.x, where x >= 3. On Python 2.3 the optional
C extension will not be built. This will negatively affect performance, but everything should still work.
Additional dependencies are:
- `ElementTree <http://effbot.org/zone/element-index.htm>`_ (this is included with Python >= 2.5)
- (to generate documentation) `epydoc <http://epydoc.sourceforge.net/>`_
- (to auto-discover tests) `nose <http://somethingaboutorange.com/mrl/projects/nose/>`_
Examples
========
Here's a basic example (for more see the *examples/* directory):
>>> import pymongo
>>> connection = pymongo.Connection("localhost", 27017)
>>> db = connection.test
>>> db.name()
u'test'
>>> db.my_collection
Collection(Database(Connection('localhost', 27017), u'test'), u'my_collection')
>>> db.my_collection.save({"x": 10})
ObjectId('4aba15ebe23f6b53b0000000')
>>> db.my_collection.save({"x": 8})
ObjectId('4aba160ee23f6b543e000000')
>>> db.my_collection.save({"x": 11})
ObjectId('4aba160ee23f6b543e000002')
>>> db.my_collection.find_one()
{u'x': 10, u'_id': ObjectId('4aba160ee23f6b543e000002')}
>>> for item in db.my_collection.find():
... print item["x"]
...
10
8
11
>>> db.my_collection.create_index("x")
u'x_1'
>>> for item in db.my_collection.find().sort("x", pymongo.ASCENDING):
... print item["x"]
...
8
10
11
>>> [item["x"] for item in db.my_collection.find().limit(2).skip(1)]
[8, 11]
Documentation
=============
You will need `epydoc <http://epydoc.sourceforge.net/>`_ installed to generate the documentation. Documentation can be generated by running **python setup.py doc**. Generated documentation can be found in the *doc/* directory.
Testing
=======
The easiest way to run the tests is to install `nose <http://somethingaboutorange.com/mrl/projects/nose/>`_ (**easy_install nose**) and run **nosetests** or **python setup.py test** in the root of the distribution. Tests are located in the *test/* directory.
Credits
=======
Thanks to (in no particular order) (if you belong here and are missing please let us know):
- moe at mbox dot bz:
- Turn off nagle
- Michael Stephens (mikejs):
- Seek and tell for read mode GridFile
- Joakim Sernbrant (serbaut):
- Fix decref bug in tuple encoder
- Hex __repr__ and __str__ for ObjectId
- Performance optimizations for writing large files to GridFS
- Some updates to the README
- Fix for ObjectId + multiprocessing
- Alexander Artemenko (svetlyak40wt):
- Fix spurious errors in thread test
- Mathias Stearn (RedBeard0531):
- Add support for finalize in group()
- Fajran Iman Rusadi (fajran):
- Add Debian control files
- Brad Clements (bkc):
- A fix for Python 2.3 compatability
- Andrey Fedorov (andreyf)
- Added __hash__ methods to DBRef and ObjectId
a4b2b4efe5