What are Scrapy middlewares and how do they work?
An example of an AI chatbot conversation about Scrapy middlewares and their functionality.
What are Scrapy middlewares and how do they work?
Scrapy middlewares are hooks into Scrapy's request/response processing. They allow you to modify requests and responses globally.
Can you give me an example of a middleware?
Sure! A common example is the User-Agent middleware, which allows you to set a custom User-Agent header for your requests.
How do I create a custom middleware?
To create a custom middleware, define a class with methods like process_request and process_response, then add it to the DOWNLOADER_MIDDLEWARES setting.
What are some common use cases for middlewares?
Common use cases include handling retries, modifying headers, managing cookies, and implementing proxies.
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