Esto es lo que probé: (cuaderno de ipython, con python2.7)

import gcp
import gcp.storage as storage
import gcp.bigquery as bq
import matplotlib.pyplot as plt
import pandas as pd
import numpy as np

sample_bucket_name = gcp.Context.default().project_id + '-datalab'
sample_bucket_path = 'gs://' + sample_bucket_name 
sample_bucket_object = sample_bucket_path + '/myFile.csv'
sample_bucket = storage.Bucket(sample_bucket_name)
df = bq.Query(sample_bucket_object).to_dataframe()

Que falla
¿tendrías pistas sobre lo que estoy haciendo mal?