python2.7 json 转换日期的处理的示例

import json
from datetime import date, datetime


def __default(obj):
  if isinstance(obj, datetime):
    return obj.strftime('%Y-%m-%dT%H:%M:%S')
  elif isinstance(obj, date):
    return obj.strftime('%Y-%m-%d')
  else:
    raise TypeError('%r is not JSON serializable' % obj)

print json.dumps({
    'd': datetime.now(), 
    'today': date.today(), 
    'x': 111
  }, default=__default)

conn=self.getConnection();
cursor=conn.cursor();
cursor.execute(sqlText,params);
result=cursor.fetchall()
jsonstr=json.dumps(myresult,default=__default)
print jsonstr