requests超时，重试(Python请求的高级用法)
import requests
from requests.adapters import HTTPAdapter
from requests.packages.urllib3.util.retry import Retry
retry_strategy = Retry(
total=3,
status_forcelist=[429,500,502,503,504],
# method_whitelist=['HEAD','GET','OPTTIONS']
)
adapter = HTTPAdapter(max_retries=retry_strategy)
http= requests.Session()
http.mount('https://',adapter)
http.mount('http://',adapter)
r = http.get('https://www.baidu.com')
r.encoding = 'utf-8'
print(r.text)做个备忘
from：https://hodovi.ch/blog/advanced-usage-python-requests-timeouts-retries-hooks/
