python3.7里面在用requests做接口测试的时候报错显示状态码是415，不支持的媒体类型的解决方法

import json
import requests
requests.packages.urllib3.disable_warnings()


class RunMethod:
    def post_main(self, url, data, header=None):
        res = None
        if header != None:
            res = requests.post(url=url, data=data, headers=header, verify=False)
        else:
            res = requests.post(url=url, data=data, verify=False)
        return res.json()

    def get_main(self, url, data=None, header=None):
        res = None
        if header != None:
            res = requests.get(url=url, params=data, headers=header, verify=False)
        else:
            res = requests.get(url=url, params=data, verify=False)
        return res.json()

    def run_main(self, method, url, data=None, header=None):
        res = None
        if method == 'Post':
            res = self.post_main(url, data, header)
        else:
            res = self.get_main(url, data, header)
        return json.dumps(res, indent=2, sort_keys=True, ensure_ascii=False)


if __name__ == '__main__':
    url = '要测试接口的登录名称'
    header = {
        'Content-Type': 'application/json;charset=UTF-8',
        'User - Agent': 'Mozilla / 5.0(Windows NT 10.0;WOW64) AppleWebKit / 537.36(KHTML, likeGecko) Chrome / 77.0.3865.90Safari / 537.36',
        'Cookie': 'JSESSIONID = A_u - 1Fehp5DAb0KmmZ_Se0_njZbhoD3VbNuQq3zD;user = {}'
    }
    data = {
        'loginName': '登录账号',
        'password': '登录密码'
    }
    run = RunMethod()
    run_test = run.run_main(method="Post", url=url, header=header,data=data)
    print(run_test)

打印的结果是： 

 

 

 

解决方法： 

 

 这样就能正确的把这个接口里面的数据给打印出来了