http://www.python-requests.org/en/master/user/quickstart/#make-a-request
get请求
r = requests.get('https://api.github.com/events')
可以从r对象获得我们所需要的信息
post请求
r = requests.post('https://httpbin.org/post', data = {'key':'value'})
响应内容
r.text unicode统一码
r.content 二进制