python调用JS方法实例

安装插件

pip install pyexecjs

直接安装可能会出错:

C:\Users\Administrator>pip install execjs
Collecting execjs
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError(SSLError(1, '[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed (_ssl.c:852)'),)': /simple/execjs/

解决方法：引用国内的镜像安装

pip install pyexecjs -i http://pypi.douban.com/simple --trusted-host pypi.douban.com

加载JS并执行

import execjs
def get_js_txt(path): #读取js文件用于加载js
    f = open(path, 'r', encoding='utf-8')
    line = f.readline()
    js_str = ''
    while line:
        js_str += line
        line = f.readline()
    return js_str

def run_js():
    js_str = get_js_txt(path)
    ctx = execjs.compile(js_str)
    return (ctx.call('js_func', pramas)) # 第一个参数js_func为要调用的js函数方法，后面pramas就是函数的参数，多个以逗号隔开