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Femi Anthony is a seasoned and knowledgeable software programmer, with over 15 years experience in a vast array of languages, including Perl, C, C++, Java, and Python. He has worked in both the Internet space and financial services space for many years and is now working for a well-known financial data company. He holds a bachelor's degree in mathematics with computer science from MIT and a master's degree from the University of Pennsylvania. His pet interests include data science, machine learning, and Python. Femi is working on a few side projects in these areas. His hobbies include reading, soccer, and road cycling. You can follow him at @dataphanatik, and for any queries, contact him at <>.

First and foremost, I would like to thank my wife, Ene, for her support throughout my career and in writing this book. She has been my inspiration and motivation for continuing to improve my knowledge and helping me move ahead in my career. She is my rock, and I dedicate this book to her. I also thank my wonderful children, Femi, Lara, and our new addition, Temi, for always making me smile and for understanding on those days when I was writing this book instead of playing games with them.

I would also like to thank my book reviewersOpeyemi Akinjayeju, who is a dear friend of mine, as well as Louis Hnault and Carlos Marinfor their invaluable feedback and input toward the completion of this book. Lastly, I would like to thank my parents, George and Katie Anthony, for instilling a strong work ethic in me from an early age.

Opeyemi Akinjayeju is risk management professional. He holds graduate degrees in statistics (Penn State University) and economics (Georgia Southern University), and has built predictive models for insurance companies, banks, captive automotive finance lenders, and consulting firms. He enjoys analyzing data and solving complex business problems using SAS, R, EViews/Gretl, Minitab, SQL, and Python. Opeyemi is also an adjunct at Northwood University where he designs and teaches undergraduate courses in microeconomics and macroeconomics.

Louis Hnault is a data scientist at OgilvyOne Paris. He loves combining mathematics and computer science to solve real-world problems in an innovative way. After getting a master's degree in engineering with a major in data sciences and another degree in applied mathematics in France, he entered into the French start-up ecosystem, working on several projects. Louis has gained experience in various industries, including geophysics, application performance management, online music platforms, e-commerce, and digital advertising. He is now working for a leading customer engagement agency, where he helps clients unlock the complete value of customers using big data.

I've met many outstanding people in my life who have helped me become what I am today. A great thank you goes to the professors, authors, and colleagues who taught me many fantastic things. Of course, I can't end this without a special thought for my friends and family.

Carlos Marin is a software engineer at Rackspace, where he maintains and develops a suite of applications that manage networking devices in Rackspace's data centers. He has made contributions to OpenStack, and has worked with multiple teams and on multiple projects within Rackspace, from the Identity API to big data and analytics.

Carlos graduated with a degree in computer engineering from the National Autonomous University of Mexico. Prior to joining Rackspace, he worked as a consultant, developing software for multiple financial enterprises in programming languages. In Austin, Texas, he regularly attends local technology events and user groups. He also spends time volunteering and pursuing outdoor adventures.

I'm grateful to my parents and family, who have always believed in me.