没有名为“psycopg2”的模块

Question

I Installed psycopg2 using pip

C:\Users\username>python -m pip install psycopg2

Adjusted my settings to:

DATABASES = {
  'default': {
    'ENGINE': 'django.db.backends.postgresql_psycopg2', # also tried: django.db.backends.postgresql
    'NAME': 'name',
    'USER': 'user',
    'PASSWORD': 'my_password',
    'HOST': 'localhost',
    'PORT': '5432',
   }
}

When I attempt to run the server:

import psycopg2 as Database ImportError:

No module named 'psycopg2'

So I ran this again and got:

python -m pip install psycopg2 Requirement already satisfied (use --upgrade to upgrade): psycopg2 in ...

So what have I done wrong? I am new to Django

Answer 1

There is a possibility that you have two versions of python installed and python2-pip is aliased as pip while python3-pip is aliased as pip3 .

Make sure you are using right version with python and pip .

So the command would be:

pip3 install psycopg2

Answer 2

你可以试试

pip install psycopg2-binary

Answer 3

You may need to install the package from whl file, try the below command:

pip install psycopg2-2.6.2-cp27-cp27m-win_amd64.whl

You can download this package from http://www.lfd.uci.edu/~gohlke/pythonlibs/

Answer 4

在 mac-os 上 pip install psycopg2-binary 将解决这个问题

Answer 5

It is possible that while following the installation tutorial you installed virtualenv , created some environment (like env1 ) and followed on to install django on that environment.

If so, than you are running django on that environment as well (otherwise it would not be installed). In order to install modules you need to first activate the environment and then use pip .

Answer 6

Install below dependency before installing psycopg2

apt-get install libpq-dev

Now install:

pip install psycopg2

Give the below command to generate DB for your Django config

python manage.py migrate