Django : Table doesn't exist

1. drop tables (you already did),
2. comment-out the model in model.py,
3. and ..

if django version >= 1.7:

python manage.py makemigrations
python manage.py migrate --fake

else

python manage.py schemamigration someapp --auto
python manage.py migrate someapp --fake

4. comment-in your model in models.py
5. go to step 3. BUT this time without --fake

For those that may still be having trouble (like me), try this out:

Comment out all the URL's in the main app's urls.py

Then go ahead and run migrations:

$ ./manage.py makemigrations
$ ./manage.py migrate

The problem was alleviated by removing the ()'s

    solved_time = models.DateTimeField('solved time', default=timezone.now())

to

    solved_time = models.DateTimeField('solved time', default=timezone.now)

I got this answer from reddit