5.6节运行excel_util.py报错，提示格式错误，可是我是按照课程一步一步写的。没发现哪里错了

excel_util.py如下：
#coding=utf-8
import xlrd
class ExcelUtil:
def init(self,excel_path=None,index=None):
if excel_path == None:
excel_path = "/Users/hustcxy/Documents/SeleniumPython/config/casedata.xls"
if index == None:
index = 0
self.data = xlrd.open_workbook(excel_path)
self.table = self.data.sheets()[index]
#行数
self.rows = self.table.nrows
#[[],[]]

def get_data(self):
    result = []
    for i in range(self.rows):
        col = self.table.row_values(i)
        result.append(col)
    return result

if name == “main”:
ex = ExcelUtil()
ex.get_data()