Hi,

AFAIK PostgreSQL is not available under AppEngine standard if you're using 
Python 2.7 since the driver is not / can not be installed (Psycopg2). If 
you're using AppEngine standard "second generation" runtime with Python 3 
you should be able to get it working by making sure the right packages are 
specified in the requirements.txt and Django is configured to connect using 
Unix Domain Sockets rather than TCP. So your Django settings should contain 
something like:

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2', # note the 
_psycopg2 postfix
        'HOST': os.environ['DB_HOST'], # this should be set to something 
like "/cloudsql/..."
        # 'PORT': os.environ['DB_PORT'], - this is NOT needed
        'NAME': os.environ['DB_NAME'],
        'USER': os.environ['DB_USER'],
        'PASSWORD': os.environ['DB_PASSWORD'] or ''
    }
}

ie. you should try connecting to it using unix domain sockets rather than 
TCP. This seems to be also some relevant discussion: 
https://github.com/GoogleCloudPlatform/python-docs-samples/issues/870

Good luck!
Attila

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        • [... 'Chen Yu' via Google App Engine
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