How can I get the final URL after redirects using Python Requests?

Retrieving Redirected URLs with Python Requests

Requests, a popular Python library for sending HTTP requests, allows users to handle redirects by setting the allow_redirects parameter to True. While this resolves the issue of automatic redirects, it leaves you unaware of the target URL. This question addresses how to obtain the final URL after a series of redirects.

The solution lies in the response.history attribute. After a successful request, response.url returns the final URL, while response.history provides a list of all intermediate responses and their respective URLs. Using this data, you can inspect the redirects and determine the final destination.

The following code snippet demonstrates this approach:

import requests

response = requests.get(someurl, allow_redirects=True)
if response.history:
    print("Request was redirected")
    for resp in response.history:
        print(resp.status_code, resp.url)
    print("Final destination:")
    print(response.status_code, response.url)
else:
    print("Request was not redirected")

This code checks if the response.history attribute is not empty, indicating the occurrence of redirects. Each resp object in the history contains the status code and URL of an intermediate response. Finally, response.url provides the final URL.

Consider the following example:

>>> import requests
>>> response = requests.get('http://httpbin.org/redirect/3')
>>> response.history
(<Response [302]>, <Response [302]>, <Response [302]>)
>>> for resp in response.history:
...     print(resp.status_code, resp.url)
... 
302 http://httpbin.org/redirect/3
302 http://httpbin.org/redirect/2
302 http://httpbin.org/redirect/1
>>> print(response.status_code, response.url)
200 http://httpbin.org/get

This output confirms that the request was redirected three times before reaching the final destination at http://httpbin.org/get, providing a complete picture of the redirect chain.

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