Mongodb query using python

Question

I have key-value pairs stored in MongoDB collections in the following format.

collection 1:
{ entertainment, 22
  popcorn,14
}

collection 2:
{ entertainment, 11
  movie, 16
}

How do i query from python to MongoDB in such a way to find the collection with the highest value/frequency of a key ("entertainment" in this case) ?

Expected output: collection 1

Answer 1

在mongo shell上，我将按照以下方式进行操作，使用pymongo驱动程序可以很容易地复制它。

db.getCollection('mydummycoll').aggregate([{$sort:{valueToSort:-1}},{$limit:1}])