language: DefaultCredentialsError: Could not automatically determine credentials

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.

[vroon5]

The following solution worked. : explicitly mentioning the location of the private key https://google-auth.readthedocs.io/en/latest/user-guide.html#service-account-private-key-files

[sylwester-prymula]

I cannot completely interpret the output of set, but I assume this is your question. It identifies that google application credentials above path.

set path without quotation marks! set GOOGLE_APPLICATION_CREDENTIALS=[PATH]

wrong: set GOOGLE_APPLICATION_CREDENTIALS=“[PATH]”