1.数据库模型问题

　　问题1：

　　　　WARNINGS:
　　　　　　api.VerificationCode.expiration_time: (fields.W161) Fixed default value provided.
　　　　　　HINT: It seems you set a fixed date / time / datetime value as default for this field. This may not be what you want. If you want to have the current date as default, use `django.utils.timezone.now`

 　解决：

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django 开发常见问题

原文：https://www.cnblogs.com/xingxingnbsp/p/12132020.html