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A strictly RFC 4510 conforming LDAP V3 pure Python client library

Project description

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ldap3 is a strictly RFC 4510 conforming LDAP V3 pure Python client library. The same codebase runs in Python 2, Python 3, PyPy and PyPy3.

A more pythonic LDAP

LDAP operations look clumsy and hard-to-use because they reflect the old-age idea that time-consuming operations should be performed client-side to not hog the server with heavy elaborations. To alleviate this ldap3 includes a fully functional Abstraction Layer that lets you interact with the LDAP server in a modern and pythonic way. With the Abstraction Layer you don’t need to directly issue any LDAP operation at all.

Thread safe strategies

In multithreaded programs you must use on of SAFE_SYNC (synchronous connection strategy), SAFE_RESTARTABLE (restartable syncronous connection strategy) or ASYNC (asynchronous connection strategy).

Each LDAP operation with SAFE_SYNC or SAFE_RESTARTABLE strategies returns a tuple of four elements: status, result, response and request.

  • status: states if the operation was successful

  • result: the LDAP result of the operation

  • response: the response of a LDAP Search Operation

  • request: the original request of the operation

The SafeSync strategy can be used with the Abstract Layer, but the Abstract Layer currently is NOT thread safe. For example, to use SAFE_SYNC:

from ldap3 import Server, Connection, SAFE_SYNC
server = Server('my_server')
conn = Connection(server, 'my_user', 'my_password', client_strategy=SAFE_SYNC, auto_bind=True)
status, result, response, _ ='o=test', '(objectclass=*)')  # usually you don't need the original request (4th element of the returned tuple)

With ASYNC you must request the response with the get_response() method.

Home Page

The home page of the ldap3 project is


Documentation is available at


The ldap3 project is open source software released under the LGPL v3 license. Copyright 2013 - 2020 Giovanni Cannata

PEP8 Compliance

ldap3 is PEP8 compliant, except for line length.


Package download is available at


Install with pip install ldap3

Git repository

You can download the latest source at

Continuous integration

Continuous integration for testing is at

Support & Development

You can submit support tickets on You can submit pull request on the dev branch at

Thanks to

  • Ilya Etingof, the author of the pyasn1 package for his excellent work and support.

  • Mark Lutz for his Learning Python and Programming Python excellent books series and John Goerzen and Brandon Rhodes for their book Foundations of Python Network Programming. These books are wonderful tools for learning Python and this project owes a lot to them.

  • JetBrains for donating to this project the Open Source license of PyCharm Professional.

  • GitHub for providing the free source repository space and the tools I use to develop this project.

  • The FreeIPA team for letting me use their demo LDAP server in the ldap3 tutorial.

Contact me

For information and suggestions you can contact me at You can also open a support ticket on


Updated changelog at

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