requests库内置了不同的方法来发送不同类型的http请求，用法如下所示：

import requests

base_url = 'http://httpbin.org'

#发送GET类型的请求
r = requests.get(base_url+'/get')
print(r.status_code)

#发送POST类型的请求
r = requests.post(base_url+'/post')
print(r.status_code)

#发送PUT类型的请求
r = requests.put(base_url+'/put')
print(r.status_code)

#发送DELETE类型请求
r = requests.delete(base_url+'/delete')
print(r.status_code)