python-requests 必需如下使用才能保持keep-alive

python-requests 必需如下使用才能保持keep-alive

import requests

session = requests.session()

session.get('http://www.qq.com')
session.get('http://www.qq.com')

#輸出如下
>>INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.qq.com
>>DEBUG:requests.packages.urllib3.connectionpool:"GET / HTTP/1.1" 200 None
>>DEBUG:requests.packages.urllib3.connectionpool:"GET / HTTP/1.1" 200 None

其官網提供的調試的方法是會產生新連接的，可以通過以下方法設置log爲debug看到：

logging.BASIC_FORMAT = '%%(levelname)s - %(filename)s[%(lineno)d]- %(message)s'
logging.basicConfig() # you need to initialize logging, otherwise you will not see anything from requests
requests_log = logging.getLogger("requests.packages.urllib3")
requests_log.setLevel(logging.DEBUG)
requests_log.propagate = True

# 第一次調用，log會輸出創建一個新連接並放進連接池
requests.get('http://www.qq.com')

# 第二次調用，log依然輸出創建一個新連接並放進連接池
requests.get('http://www.qq.com')


#輸出如下：
>>INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.qq.com
>>DEBUG:requests.packages.urllib3.connectionpool:"GET / HTTP/1.1" 200 None
>>INFO:requests.packages.urllib3.connectionpool:Starting new HTTP connection (1): www.qq.com
>>DEBUG:requests.packages.urllib3.connectionpool:"GET / HTTP/1.1" 200 None

Edit By MaHua