Wordcloud using mongodb data

mongo_wordcloud.py

db.getCollection('cogniwidebot').aggregate([
    {
        "$project": {
            "words": { "$split": ["$query", " "] }
        }
    },
    {
        "$unwind": {
            "path": "$words"
        }
    },
    {
        "$group": {
            "_id": "$words",

            "count": { "$sum": 1 }
        }
    },
    { "$sort": { "count": -1 } },
    { "$limit": 5 }
])