TypeError: __init__() missing 1 required positional argument: 'on_delete'
在新建的booktest包里的models.py写入定义的类。 class BookInfo(models.Model):
'''定义书本类'''
btitle = models.CharField(max_length=20)
bpub_date = models.DateField()
class HeroInfo(models.Model):
'''定义英雄
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