get 请求：不带参数 request.get(url)
    带参数 request.get(url,param={key1 = value1, key2 = value2 })
    r.url获取请求url
    post请求: 不带参数 request.post()
    带参数 request.post(url,param = {key1:value ,key2:value2})
    image.png