解决Django migrate No changes detected 不能创建表的问题

django.db.utils.OperationalError: (1091, "Can't DROP 'email'; check that column/key exists")

python3 manage.py makemigrationspython3 manage.py migrate

$ rm -rf migrations/ __pycache__/

$ python3 manage.py makemigrationsNo changes detected$~/code/django/blogproject$ python3 manage.py makemigrations commentsMigrations for 'comments': comments/migrations/0001_initial.py - Create model Comment$~/code/django/blogproject$ python3 manage.py migrateOperations to perform: Apply all migrations: admin, auth, blog, comments, contenttypes, sessions, usersRunning migrations: No migrations to apply.

delete from django_migrations where app='yourappname';

$ python3 manage.py makemigrations commentsNo changes detected in app 'comments'$~/code/django/blogproject$ python3 manage.py migrate commentsOperations to perform: Apply all migrations: commentsRunning migrations: Applying comments.0001_initial... OK

python3 manage.py makemigrations python3 manage.py migrate