Python JSON编码器支持datetime？

本文介绍了Python JSON编码器支持datetime？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 29岁程序员，3月因学历无情被辞！ 有没有优雅的方法让Python JSON编码器支持日期时间？一些第三方模块或简单的黑客？is there any elegant way to make Python JSON encoder support datetime? some 3rd party module or easy hack?我正在使用tornado的数据库包装器从db获取一些原始数据以生成一个json。查询结果包括一个常规的MySQL时间戳列。I am using tornado's database wrapper to fetch some raws from db to generate a json. The query result includes a regular MySQL timestamp column. Python的默认json编码器不支持自己的日期时间类型，这非常令人讨厌，这种类型在各种类型中都很常见数据库查询。It's quite annoying that Python's default json encoder doesn't support its own datetime type, which is so common in all kinds of database queries.我不想修改Python自己的json编码器。任何好的做法？非常感谢！I don't want to modify Python's own json encoder. any good practice? Thanks a lot! ps：我通过修改Python JSON编码器默认方法找到了一个肮脏的黑客：ps: I found a dirty hack by modifying the Python JSON encoder default method:更改：def default(self, o): raise TypeError(repr(o) + " is not JSON serializable")收件人：def default(self, o): from datetime import date from datetime import datetime if isinstance(o, datetime): return o.isoformat() elif isinstance(o, date): return o.isoformat() else: raise TypeError(repr(o) + " is not JSON serializable")好吧，它只是开发环境的临时解决方案。well, it will be a temporary solution just for dev environment.但对于长期解决方案或生产环境，这非常难看，每次部署到新服务器时都必须进行修改。But for long term solution or production environment, this is quite ugly, and I have to do the modification every time I deploy to a new server.还有更好的方法吗？我不想修改Python代码本身，也不想修改Tornado源代码。我可以用自己的项目代码做些什么来实现这一目标吗？最好以一个步伐。Is there a better way? I do not want to modify Python code itself, neither Tornado source code. Is there something I can do with my own project code to make this happen? preferably in one pace.非常感谢！推荐答案 文档建议继承JSONEncoder并实现自己的默认方法。好像你基本上就在那里，而且这不是一个肮脏的黑客。The docs suggest subclassing JSONEncoder and implementing your own default method. Seems like you're basically there, and it's not a "dirty hack".默认编码器不处理原因日期是JSON中没有日期的标准表示。 有些人正在使用格式/日期（1198908717056）/ ，但我个人更喜欢ISO格式。The reason dates aren't handled by the default encoder is there is no standard representation of a date in JSON. Some people are using the format /Date(1198908717056)/, but I prefer ISO format personally.import datetimeclass DateTimeEncoder(json.JSONEncoder): def default(self, obj): if isinstance(obj, datetime.datetime): return obj.isoformat() elif isinstance(obj, datetime.date): return obj.isoformat() elif isinstance(obj, datetime.timedelta): return (datetime.datetime.min + obj).time().isoformat() else: return super(DateTimeEncoder, self).default(obj)DateTimeEncoder().encode(object) 这篇关于Python JSON编码器支持datetime？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！ 上岸，阿里云！