Flask - ImportError: No module named migrate.versioning

Question

I'm working through a flask tutorial and am trying to run a script that creates a database instead of doing it through the command line. It uses the SQLAlchemy-migrate package, but when I try to run the script, it gives an ImportError.

This is the terminal output:

Sean:app seanpatterson$ python ./db_create.py 
Traceback (most recent call last):
  File "./db_create.py", line 2, in <module>
    from migrate.versioning import api
ImportError: No module named migrate.versioning

This is the db_create.py script:

#!flask/bin/python
from migrate.versioning import api
from config import SQLALCHEMY_DATABASE_URI
from config import SQLALCHEMY_MIGRATE_REPO
from app import db
import os.path
db.create_all()
if not os.path.exists(SQLALCHEMY_MIGRATE_REPO):
    api.create(SQLALCHEMY_MIGRATE_REPO, 'database repository')
    api.version_control(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO)
else:
    api.version_control(SQLALCHEMY_DATABASE_URI, SQLALCHEMY_MIGRATE_REPO,     api.version(SQLALCHEMY_MIGRATE_REPO))

This is the config file it references:

#!/usr/bin/env python
import os
basedir = os.path.abspath(os.path.dirname(__file__))

SQLALCHEMY_DATABASE_URI = 'sqlite:///' + os.path.join(basedir, 'app.db')
SQLALCHEMY_MIGRATE_REPO = os.path.join(basedir, 'db_repository')

This application is being run with a virtual environment. This are the module that relates to it that I have installed in the environment:

sqlalchemy_migrate-0.7.2-py2.7.egg-info

Any help appreciated

Answer 1

pip install sqlalchemy==0.7.9 

and

pip install sqlalchemy-migrate==0.7.2 

and

optionally this flask-whooshalchemy==0.55a should solve the problem