标签：retries ConnectionError Python make request try url factor requests

To solve the requests "ConnectionError: Max retries exceeded with url", use a Retry object and specify how many connection-related errors to retry on and set a backoff factor to apply between attempts.

main.py  

import requests
from requests.adapters import HTTPAdapter, Retry


def make_request():
    session = requests.Session()
    retry = Retry(connect=3, backoff_factor=0.5)
    adapter = HTTPAdapter(max_retries=retry)
    session.mount('http://', adapter)
    session.mount('https://', adapter)

    url = 'https://reqres.in/api/users'
    response = session.get(url)

    parsed = response.json()

    print(parsed)


make_request()

The Session object allows us to persist certain parameters across requests.

We passed the following keyword arguments to the Retry object:

• connect - the number of connection-related errors to retry on
• backoff_factor - a backoff factor factor to apply between attempts after the second try.

  The example above retries the request 3 times with backoff factor of 0.5 seconds after the second try.

You can also use a try/except block if you don't want to retry when an error occurs.

main.py  

import requests


def make_request():
    try:
        url = 'https://reqres.in/api/users'
        response = requests.get(url)

        parsed = response.json()

        print(parsed)
    except requests.exceptions.ConnectionError:
        # 
 
 
标签：retries,ConnectionError,Python,make,request,try,url,factor,requests	

来源： https://www.cnblogs.com/yuyanc/p/16576828.html 


本站声明：
1. iCode9 技术分享网（下文简称本站）提供的所有内容，仅供技术学习、探讨和分享；

2. 关于本站的所有留言、评论、转载及引用，纯属内容发起人的个人观点，与本站观点和立场无关；

3. 关于本站的所有言论和文字，纯属内容发起人的个人观点，与本站观点和立场无关；

4. 本站文章均是网友提供，不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属；如您发现该文章侵犯了您的权益，可联系我们第一时间进行删除；

5. 本站为非盈利性的个人网站，所有内容不会用来进行牟利，也不会利用任何形式的广告来间接获益，纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。