Postgres database server

Hi guys I have a problem.
I am so new in Django and Postgres

I am installed python, django, postgres on Ubuntu (acording to https://docs.djangoproject.com/en/1.7/intro/tutorial01/)
but I have problem in seting up The development server,
I see password for postgres user error after typing this is my Terminal

python manage.py runserver

I put a password in setting.py file but it doesn't work yet.

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