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I'm trying to push a django app to heroku and getting an error that I haven't seen anywhere in the heroku or stackoverflow forums. I'm using postgres. I'm not sure where to proceed; I see nothing in any of the docs that says what is wrong. The main error is: ImportError: No module named psycopg2.extensions ...but heroku's configuration is the one that is setting that as the ENGINE, I don't know how to get by it. My conversation with heroku to make sure it knows about postgres $ heroku addons:add heroku-postgresql:dev Adding heroku-postgresql:dev on morning-crag-1585... done, v24 (free) Attached as HEROKU_POSTGRESQL_OLIVE_URL Database has been created and is available ! This database is empty. If upgrading, you can transfer ! data from another database with pgbackups:restore. . Use `heroku addons:docs heroku-postgresql:dev` to view documentation. $ heroku pg:wait $ heroku config | grep HEROKU_POSTGRESQL HEROKU_POSTGRESQL_OLIVE_URL: postgres://<blah-blah-blah>@ec2-<ip-address>.compute-1.amazonaws.com:5432/<blah-blah> $ heroku pg:promote HEROKU_POSTGRESQL_OLIVE_URL Promoting HEROKU_POSTGRESQL_OLIVE_URL to DATABASE_URL... done My requirements.txt: Django==1.4.2 wsgiref==0.1.2 dj-database-url==0.2.1 A snippet from my settings.py: print "Got here before!\n" try: import dj_database_url DATABASES = { 'default': dj_database_url.config(default='postgres://localhost') } except: print "Unexpected error:", sys.exc_info() print DATABASES When I push to heroku, I get this from heroku logs : heroku[slugc]: Slug compilation finished heroku[web.1]: Starting process with command `python ./manage.py runserver 0.0.0.0:30550 --noreload` app[web.1]: Got here before! app[web.1]: app[web.1]: {'default': {'ENGINE': 'django.db.backends.postgresql_psycopg2', 'NAME': '<blah blah>

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