"Subclassing and Composition – A Pythonic Tour of Trade-Offs", Hynek Schlawack
Twitter presentation
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12. 10 Most Followed Celebrities on Twitter and Facebook Eminem Cristiano Ronaldo Megan Fox Lil Wayne Vin Diesel AKON Both Lady Gaga Justin Bieber Rihanna Shakira Katy Perry Kim Kardashian Britney Spears Taylor Swift Ashton Kutcher Ellen Degeneres