我在下面的语句添加了age = models.CharField(max_length=5) from django.db import models class Person(models.Model): first_name = models.CharField(max_length=30) last_name = models.CharField(max_length=30) age = models.CharField(max_length=5) 执行了python manage.py migrate，python manage.py makemigrations后，发现后面无法跟着练习下去，请问怎么办？
我在下面的语句添加了age = models.CharField(max_length=5) from django.db import models class Person(models.Model): first_name = models.CharField(max_length=30) last_name = models.CharField(max_length=30) age = models.CharField(max_length=5) 执行了python manage.py migrate，python manage.py makemigrations后，发现后面无法跟着练习下去，请问怎么办？