Gevent

PyMongo supports Gevent. Simply call Gevent’s monkey.patch_all() before loading any other modules:

>>> # You must call patch_all() *before* importing any other modules
>>> from gevent import monkey
>>> monkey.patch_all()
>>> from pymongo import MongoClient
>>> client = MongoClient()

PyMongo uses thread and socket functions from the Python standard library. Gevent’s monkey-patching replaces those standard functions so that PyMongo does asynchronous I/O with non-blocking sockets, and schedules operations on greenlets instead of threads.