python新建的xlsx打不开

import os,time

def createfile(lx = ".xlsx"):
    log_path = os.path.dirname(os.path.abspath('.')) + '\\data\\'
    t = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))  #将指定格式的当前时间以字符串输出
    suffix = lx # 文件类型
    newfile= t + suffix
    path = log_path + t + suffix
    f = open(path,'w')
    print(newfile)
    f.close()
    return newfile

createfile()

修改成

import os,time

def createfile(lx = ".xls"):  #这里修改
    log_path = os.path.dirname(os.path.abspath('.')) + '\\data\\'
    t = time.strftime('%Y%m%d%H%M%S', time.localtime(time.time()))  #将指定格式的当前时间以字符串输出
    suffix = lx # 文件类型
    newfile= t + suffix
    path = log_path + t + suffix
    f = open(path,'w')
    print(newfile)
    f.close()
    return newfile

createfile()