python读取excel,做接口自动化测试

#读取excel
from openpyxl import load_workbook
class Doexcel:
    def __init__(self, file_name, sheet_name):
        self.file_name = file_name
        self.sheet_name = sheet_name
        # 获取一个表单对象
        self.sheet_obj = load_workbook(self.file_name)[self.sheet_name]
        self.max_row = self.sheet_obj.max_row
    def get_data(self, i, j):
        """
        根据传入的坐标获取值
        :param i: X坐标
        :param j: Y坐标
        :return:
        """
        return self.sheet_obj.cell(i, j).value

    #回写数据
    def write_back(self,i,result,Testresult):