TypeError：initial_value 必须是 str 或 None，而不是字节（bigquery）

Question

我正在使用 python3.5，我使用 python 通过 bigquery 创建 bigquery client (https://github.com/tylertreat/BigQuery-Python)

代码如下：

from bigquery import get_client

PROJECT_ID = 'api-project-xxxxxx'
SERVICE_ACCOUNT = 'xxxx@api-project-xxxx.iam.gserviceaccount.com'
PRIVATE_KEY_PATH = 'xxxx.p12'

with open(PRIVATE_KEY_PATH, 'rb') as f:
     private_key = f.read()

client = get_client(PROJECT_ID,private_key=private_key,service_account=SERVICE_ACCOUNT,readonly=True)

我收到以下错误：

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
<ipython-input-181-858afcfa416a> in <module>()
----> 1 client = get_client(PROJECT_ID,private_key=private_key,service_account=SERVICE_ACCOUNT,readonly=True)
/Users/XXXXXX/.pyenv/versions/anaconda3-2.4.0/lib/python3.5/site-packages/bigquery/client.py in get_client(project_id, credentials, service_url, service_account, private_key, private_key_file, json_key, json_key_file, readonly, swallow_results)
    131         credentials = _credentials().from_p12_keyfile_buffer(
    132             service_account,
--> 133             StringIO(private_key),
    134             scopes=scope)
    135 
TypeError: initial_value must be str or None, not bytes

Answer 1

StringIO 将str 对象转换为流。您需要传递一个str，但private_key 是一个字节对象，因为您正在以二进制模式读取文件。试试这个：

with open(PRIVATE_KEY_PATH, 'r') as f:
     private_key = f.read()

其余代码保持不变。