Python.URLs
1. The Future of Asynchronous IO in Python
https://medium.com/@paulcolomiets/the-future-of-asynchronous-io-in-python-ce200536d847
2. Python's Hardest Problem, Revisited
http://www.jeffknupp.com/blog/2013/06/30/pythons-hardest-problem-revisited/
3. Improve Your Python: 'yield' and Generators Explained
http://www.jeffknupp.com/blog/2013/04/07/improve-your-python-yield-and-generators-explained/
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