handling retries in python requests

Handling Retries in Python Requests

Python Requests is a popular HTTP library that allows developers to send HTTP/1.1 requests using Python. However, sometimes requests may fail due to network issues or server errors. In such cases, it is important to handle retries to ensure that the request is eventually successful.

Using Retry Library

The easiest way to handle retries in Python Requests is to use the retrying library. This library provides an easy-to-use decorator, which can be used to retry a function when it fails.

import requests
from retrying import retry

@retry(stop_max_attempt_number=3)
def make_request():
    response = requests.get('https://example.com')
    return response.content

In the above code, we have defined a function named make_request that sends a GET request to https://example.com. The decorator @retry ensures that the function is retried for a maximum of 3 times if it fails.

Using Built-in Functionality

If you do not want to use an external library, Python Requests provides built-in functionality to handle retries. This can be done by setting the max_retries parameter of the Session object.

import requests
from requests.adapters import HTTPAdapter
from requests.packages.urllib3.util.retry import Retry

retry_strategy = Retry(total=3, backoff_factor=1)
adapter = HTTPAdapter(max_retries=retry_strategy)
session = requests.Session()
session.mount('https://', adapter)
session.mount('http://', adapter)

response = session.get('https://example.com')

In the above code, we have defined a Session object and set the max_retries parameter of the HTTPAdapter to 3. This ensures that the request is retried for a maximum of 3 times if it fails. The Session object is then used to send a GET request to https://example.com.