将find()语句与sort和limit结合使用。

import pymongo

db = pymongo.MongoClient()['test']

# Set up some data
for i in range(20):
    db['mycollection'].insert_one({'username': f'person{i}', 'score': i})

# sort by score descending, limit to top 10
for record in db['mycollection'].find({}, {'_id': 0}).sort('score', pymongo.DESCENDING).limit(10):
    print(record)

打印：

{'username': 'person19', 'score': 19}
{'username': 'person18', 'score': 18}
{'username': 'person17', 'score': 17}
{'username': 'person16', 'score': 16}
{'username': 'person15', 'score': 15}
{'username': 'person14', 'score': 14}
{'username': 'person13', 'score': 13}
{'username': 'person12', 'score': 12}
{'username': 'person11', 'score': 11}
{'username': 'person10', 'score': 10}