Google translate API v2-显示403“超出每日限制”错误

我想把这个日本字翻译成英语。 但下面的代码没有给出任何结果。我尝试使用不同帐户的不同api_key。 代码如下:

from apiclient.discovery import build

API_KEY = '...'

print build(
    'translate', 'v2', developerKey=API_KEY,
).translations().list(
    q=u'こんにちは', source='ja', target='en',
).execute()

显示以下错误信息:

googleapiclient.errors.HttpError: <HttpError 403 when requesting https://www.googleapis.com/language/translate/v2?q=%E3%81%93%E3%82%93%E3%81%AB%E3%81%A1%E3%81%AF&source=ja&alt=json&target=en&key=API_KEY returned "Daily Limit Exceeded. The quota will be reset at midnight Pacific Time (PT). You may monitor your quota usage and adjust limits in the API Console: https://console.developers.google.com/apis/api/translate/quotas?project=906333222111">

我启用了 翻译api .但我没有做任何事 帐单帐户 .我认为没有必要( Google Translate API has default limits of 2 million characters/day and 10,000 characters per 100 seconds (average 100 characters/second) ).