Connecting with the cdata.googlebigquery Module:

The connector's module is used directly to establish a connection with the data source. It does this by using a connection string as its argument. For example:

import cdata.googlebigquery as mod
conn = mod.connect("InitiateOAuth=GETANDREFRESH;ProjectId=NameOfProject;DatasetId=NameOfDataset;")

Once the connection is created, you can use it to execute subsequent SQL queries.