import json
import requests
import sys
class  runmethod:
   def requestmethod(self,url,data,headers):
       res = requests.post(url=url,data=data,headers=headers).json()
       return res
if __name__=='__main__':
   res1 = runmethod()

url1 = 'http://uc.test.xbniao.com//v1.0/user/login'
data1 = {
  "key": "388cafd957a13f27666d606cbb62bd4a",
  "uname": "dandan",
  "keep": 'true'
}
headers1 = {
        'Accept': 'application/json, text/plain, */*',
'Accept-Encoding':'gzip, deflate',
'Accept-Language':'zh-CN,zh;q=0.9',
'Content-Length':'71',
'Content-Type':'application/json;charset=UTF-8',
'Cookie':'_xid=2e91257ac53d4802957196d9132468f9',
'Host':'uc.test.xbniao.com',
'Origin':'http://products.test.xbniao.com',
'X-APP-Code':'1012',
'User-Agent':'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/63.0.3239.132 Safari/537.36'
}
res = res1.requestmethod(url1,data1,headers1)
print(res)

运行后：{'errMsg': '请求参数格式错误(json)', 'statusCode': '2010001'}