<filename>manage.py
from app import create_app
from flask_script import Manager, Server
from app.models import User,db,Blog,Comment
from flask_migrate import Migrate, MigrateCommand

app = create_app('development')
manager = Manager(app)
migrate = Migrate(app,db)

manager.add_command('server', Server)
manager.add_command('db',MigrateCommand)

@manager.shell
def make_shell_context():
    return dict(app = app,db = db,User = User, Comment = Comment )

if __name__ == '__main__':
    manager.run()
           