5 Oct 2012 ... 6. Windows. 7. Apple OS X. 9. GNU/Linux. 10. Python 2 and Python 3. 11 ... Find us on Facebook: http://facebook.com/oreilly ... modern day data hackers. ... k1 k2 v1. 0 one 1 0. 3 two 3 3 duplicated and drop_duplicates by default keep the first observed value ... (0, 0.2] (0.2, 0.4] (0.4, 0.6] (0.6, 0.8] (0.8, 1]. 0. 0.