How To Add Value To Existing Value Using Pymongo

I am trying to update/create a new dataset and combine the previous value with the new one. This is how it looks like in my Python script right now. dailyDataset = { 'pId' :

Solution 1:

You can use the $inc operator:

db[dbName].update( { 'pId' : publisher, 'oId' : offer.id },  {"$inc" : {'payout':1.22}}, True)