cctxn_search.py

    request = AggregateRequest('(@txn_date:2021\-12* @txn_currency:{USD} @txn_amt:[(500, inf])')\
        .group_by('@expense_category', reducers.sum('@txn_amt').alias('total_spend'))\
        .sort_by(Desc('@total_spend'))
    result = client.ft(IDX_NAME).aggregate(request)