自定义json

import json
from datetime import datetime
from datetime import date

class JsonCustomEncoder(json.JSONEncoder):
    def default(self, field):
        if isinstance(field,datetime):
            return field.strftime(‘%Y-%m-%d %H:%M:%S‘)
        elif isinstance(field,date):
            return field.strftime(‘%Y-%m-%d‘)
        else:
            return json.JSONEncoder.default(self,field)  # 使用默认的

data = {
    "k1":123,
    "k2":datetime.now()
}

ds = json.dumps(data,cls=JsonCustomEncoder)
print(ds)