小编Civ*_*ian的帖子

我几周前使用Django我开始使用django app并在model.py中编写这些行

    from django.db import models
class Publisher(models.Model):
    name = models.CharField(max_length=30)
    address = models.CharField(max_lenght=50)
    city = models.CharField(max_length=60)
    state_province = models.CharField(max_length=30)
    country = models.model.CharField(max_length=50)
    website = models.URLField()

class Author(models.Model):
    first_name = models.CharFiled(max_length=30)
    last_name = models.CharField(max_length=40)
    email = models.EmailField()

class Book(models.Model):
    title = models.CharField(max_length=100)
    authors = models.ManyToManyField(Author)
    publisher = models.ForeignKey(Publisher)
    publication_date = models.DateField()

当我尝试验证或sqlall时

python manage.py validate
or 
python manage.py sqlall appname

它会打印此错误消息

Traceback (most recent call last):
      File "manage.py", line 11, in <module>
        execute_manager(settings)
      File "C:\Python27\lib\site-packages\django\core\management\__init__.py", line
    438, in execute_manager
        utility.execute() …