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How to Solve requests.exceptions.ConnectionError in Python get Requests

Learn how to effectively handle `requests.exceptions.ConnectionError` in Python by adding a User-Agent header to your requests. --- This video is based on the question https://stackoverflow.com/q/70464359/ asked by the user 'AliAryaie' ( https://stackoverflow.com/u/17749467/ ) and on the answer https://stackoverflow.com/a/70464429/ provided by the user 'tax evader' ( https://stackoverflow.com/u/7375347/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions. Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: how to solve requests.exceptions.ConnectionError in get request - Python Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l... The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license. If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com. --- Understanding requests.exceptions.ConnectionError in Python If you're working with the Python requests library to make HTTP GET requests, you may have encountered the frustrating error: [[See Video to Reveal this Text or Code Snippet]] This error typically arises when attempting to connect to a server that unexpectedly closes the connection. Understanding why this happens is key to resolving the issue and ensuring that your application can retrieve data effectively. What Causes Connection Errors? Server Policy: Some servers deny requests that do not include a User-Agent header, which identifies the client requesting data. Network Issues: Temporary network disruptions can also result in connection errors. Incompatible Protocols: The server may require a specific connection protocol that your request is not complying with. Given these potential causes, the solution often involves ensuring your requests are structured correctly to meet the expectations of the server. Solution: Adding a User-Agent Header The most common fix for the ConnectionError you encountered is to include a User-Agent header in your requests. This tells the server that the request is coming from a legitimate client (like a web browser) rather than a script that could potentially be misused. Step-by-Step Guide Import the Requests Library: Ensure you have the requests library installed and imported into your Python script. [[See Video to Reveal this Text or Code Snippet]] Define Your Base URL: Specify the URL you want to access. For example, if you're looking up words in the Longman Dictionary of Contemporary English (LDOCE), your base URL would look like this: [[See Video to Reveal this Text or Code Snippet]] Create the get_word Function: Modify your function to include the User-Agent header in the GET request. [[See Video to Reveal this Text or Code Snippet]] Testing Your Function: Call the function with a test word to see if it now works without throwing an error. [[See Video to Reveal this Text or Code Snippet]] Complete Example Code Here's the complete code flow that includes the fix for your initial error: [[See Video to Reveal this Text or Code Snippet]] Conclusion By following the steps outlined above and adding a User-Agent header to your requests, you can effectively resolve requests.exceptions.ConnectionError when attempting to make GET requests in Python. This not only ensures that your connections are established but also helps maintain communication with web servers that enforce strict request policies. Always remember, when interacting with web APIs or servers, it's crucial to provide the necessary headers as part of your requests, similar to how a regular browser would communicate with those servers.