关于python+request+unittest的问题

自己封装的请求

def getJwtHeaders(as_user="cc",id = "id",secret = "secret"):

    token = {
        "exp": int(time.mktime(datetime.datetime.now().timetuple())) + 30,
        "nbf": int(time.mktime(datetime.datetime.now().timetuple())),
        "sub": id,
        "aud":as_user,
    }

    jwt_token = jwt.encode(token,secret, algorithm="HS256")

    return {
        "Authorization": "JWT " + jwt_token,
    }

"""封装graphql_query"""
class gqeury(token):

    def query(self,query,operationName,variables):
        self.query_path = os.path.join(dir_path,"gql/{}".format(query))
        with open(self.query_path,"r") as f :
            self.query = f.read()
        self.data = {
            "operationName":operationName,
            "variables":variables,
            "query":self.query
        }
        self.res = requests.post(url=self.url,json = self.data,headers=getJwtHeaders())
        resp = self.res.json()
        return resp
gqeury = gqeury()

测试case：

@ddt
class check_Me(unittest.TestCase):
    @data(*datas)
    def test_meinfo(self,case):
        getJwtHeaders(case)
        # gqeury.getJwtHeaders()
        self.r = gqeury.query(operationName=None, query="me.gql", variables={})
        self.assertEqual("shuang.yu",self.r["data"]["me"]["username"],msg="验证失败")

执行用例只有第一次会成功，其余的都会失败
报错信息：(check_Me.test_meinfo_3_lu_liang)
self = <test_me.check_Me testMethod=test_meinfo_3_lu_liang>, case = 'lu.liang'

@data(*datas)
def test_meinfo(self,case):
    getJwtHeaders(case)
    # gqeury.getJwtHeaders()

  self.r = gqeury.query(operationName=None, query="me.gql", variables={})

E TypeError: 'str' object is not callable