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Beautiful Soup is a Python package for parsing HTML and XML documents, including those with malformed markup. It creates a parse tree for documents that can be used to extract data from HTML, [ 3 ] which is useful for web scraping .
Students now have access to electronic books ("e-books"), online tutoring systems and video lectures. An example of an e-book is Principles of Biology from Nature Publishing . Most notably, an increasing number of authors are avoiding commercial publishers and instead offering their textbooks under a creative commons or other open license.