function jiemi(val) {
 for (e = '', r = '0x' + val.substr(0, 2) | 0, n = 2; val.length - n; n += 2) e += '%' + ('0' + ('0x' + val.substr(n, 2) ^ r).toString(16)).slice(-2); return decodeURIComponent(e)
}

import execjs

def get_js():
 # f = open("./../js/my.js", 'r', encoding='utf-8') # 打开JS文件
 f = open("./jiemi.js", 'r', encoding='utf-8') # 打开JS文件
 line = f.readline()
 htmlstr = ''
 while line:
  htmlstr = htmlstr+line
  line = f.readline()
 return htmlstr


def get_des_psswd(e):
 js_str = get_js()
 ctx = execjs.compile(js_str) #加载JS文件
 return (ctx.call('jiemi', e)) #调用js方法 第一个参数是JS的方法名，后面的data和key是js方法的参数


if __name__ == '__main__':
 print(get_des_psswd(e='30515253705152531e535f5d'))