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A framework is a library that makes building web applications easier. Frameworks provide a structure for developers so they can focus more on the business logic of their applications. Python has one of the largest ecosystems with a great number of different libraries, frameworks, and tools for developers. Here is a list of the ten highest-ranked Python frameworks for web development on GitHub. The list includes Django, Twilio, Pinterest, Mozilla, Disqus, and Bitbucket, among the most significant sites created using Flask.