Google cloud Natural Language API error:google.auth.exceptions.DefaultCredentialsError: Could not automatically determine credentials

问题

I use Google cloud's Natural Language API from this link:

And I use this command in powershell :

$env:GOOGLE_APPLICATION_CREDENTIALS="D:\analyze_sentiment\MyFirstProject-bbe4f7bccb98.json"

Then I use this command in cmd:

set GOOGLE_APPLICATION_CREDENTIALS=D:\analyze_sentiment\MyFirstProject-bbe4f7bccb98.json

But when I use python code:

from google.cloud import language
from google.cloud.language import enums
from google.cloud.language import types

# Instantiates a client
client = language.LanguageServiceClient()
# The text to analyze
text = u'Hello, world!'
document = types.Document(
    content=text,
    type=enums.Document.Type.PLAIN_TEXT)
# Detects the sentiment of the text
sentiment = client.analyze_sentiment(document=document).document_sentiment
print('Text: {}'.format(text))
print('Sentiment: {}, {}'.format(sentiment.score, sentiment.magnitude))

The error message said:

raise exceptions.DefaultCredentialsError(_HELP_MESSAGE) google.auth.exceptions.DefaultCredentialsError: Could not automatically determine credentials. Please set GOOGLE_APPLICATION_CREDENTIALS or explicitly create credentials and re-run the application. For more information, please see https://developers.google.com/accounts/docs/application-default-credentials.

Why?

回答1:

I think you have to set GOOGLE_APPLICATION_CREDENTIALS also in you local machine. Download Google Cloud Shell and set there the credentials

回答2:

I know the error reason,I must use cmd mode to run the code,please do not run the code with pycharm or other IDE.And set this link API "enable".

And then the error disappeared.

来源：https://stackoverflow.com/questions/50717812/google-cloud-natural-language-api-errorgoogle-auth-exceptions-defaultcredential

标签

python

google-cloud-platform

google-natural-language