错误：模块“google.cloud.bigquery_storage”没有属性“BigQueryReadClient”

Question

如何修复此错误？

错误：模块“google.cloud.bigquery_storage”没有属性“BigQueryReadClient”

无法查询 BigQuery 表并将结果保存到 Pandas DataFrame。包：

google-api-core==1.23.0
google-api-python-client==1.12.8
google-auth==1.23.0
google-auth-httplib2==0.0.4
google-auth-oauthlib==0.4.1
google-bigquery==0.14
google-cloud-bigquery==2.6.1
google-cloud-bigquery-storage==2.1.0
google-cloud-core==1.4.3
google-crc32c==1.0.0
google-resumable-media==1.1.0
googleapis-common-protos==1.51.0
grpcio==1.34.0
grpcio-gcp==0.2.2
pandas==1.1.5
pandas-gbq==0.13.2
pyarrow==2.0.0

询问：

def get_orders(bqclient,
               project_id,
               dataset_id,
               orders_table_id,
               datetime_start,
               datetime_end):

    query = f"""
        SELECT *
        FROM `{project_id}.{dataset_id}.{orders_table_id}`
        WHERE
            CreatedDatetime BETWEEN TIMESTAMP('{datetime_start}') AND TIMESTAMP('{datetime_end}')
    """
    print(query)
    orders = None
    try:
        query_job = bqclient.query(query)
        orders = query_job.result().to_dataframe()
    except Exception as exception:
        print(f'Error while getting orders: {exception}')
    finally:
        return orders

Answer 1

这段代码看起来像是在使用 google-cloud-bigquery 而不是 google-cloud-bigquery-storage。 bqclient是如何创建的？ 是这样的吗？

from google.cloud import bigquery
bqclient = bigquery.Client()

尝试在您的代码中查找对BigQueryReadClient的引用并将其删除。 尝试删除google-cloud-bigquery-storage==2.1.0