How to limit mongo query in python

db.myusers.find(limit=2)

If you want to apply some condition, you can use db.myusers.find({query}, limit=2) and to count the number of results, use db.myusers.find({query}, limit=2).count()

As specified in this question, indexed access will ignore the limit. And count() does not obey limit or skip by default as explained the manual. You can pass with_limit_and_skip=True to make count() work with limit.

print db_data.count(with_limit_and_skip=True)

Or you can iterate the cursor to see limit in effect.

for data in db.myusers.find().limit(2):
    print data