Valentina Porcu - Python for Data Mining Quick Syntax Reference

Any source code or other supplementary material referenced by the author in this book is available to readers on GitHub via the books product page, located at www.apress.com/9781484241127 . For more detailed information, please visit http://www.apress.com/source-code .

Translated by Nicola Menicacci

Python is an interpreted, interactive, and object-oriented language. It features a library of functions, is extendable (as it can be used to create new modules easily), and is available for all operating systems. For these and other reasons, it is also one of the most used programming languages when it comes to data mining and machine learning.

My goal is to accompany you as you start to study this programming language, show you basic concepts, and then help you move on to data mining. Well begin by looking at how to use Python and its structures, how to install Python, and how to determine which tools are best suited for data analysis, and then switch to an introduction to data mining packages. Python for Data Mining Quick Syntax Reference is an introductory book. It provides guidancefrom taking your first programming steps with Python, to manipulating and importing datasets, to examining examples of data analysis. It does not explain fully topics such as machine learning and statistics using Python, which are beyond the scope of this volume.

This book is intended for those of you who want to gain a better understanding of the Python programming language from a data analysis perspective. We will start by reviewing Pythons basic concepts, then focus on the most used packages for data analysis. To download the code, to delve more deeply into some topics, and to acquire more practical information about Python and data mining, please visit my website ( Datawiring.me ). From the sites home page, you can subscribe to my newsletter to receive updates about the latest in Python coding and other news. My advice for those of you who are beginning programmers is to write the code manually to gain a greater understanding of it.

Python for Data Mining Quick Syntax Reference consists of 11 chapters. In Chapter , we look at some basic installation concepts and the tools available for programming in Python. We also examine differences between Python2 and Python3 and learn how to set up a work folder.

In Chapter , we study some basic concepts about creating objects, entering comments, and reserving words for the system; and look at the various types of operators that are part of the grammar of the Python programming language.

In Chapter , we extend our work with basic Python structuressuch as tuples, lists, dictionaries, sets, strings, and filesand learn how to create and convert them.

In Chapter , we create small, basic functions and learn how to save them.

Chapter deals with conditional instructions that allow us to extend the power of a function. In addition, we review other important functions as well.

In Chapter , we investigate basic concepts related to object-oriented programming and examine the concepts of modules, methods, and error handling.

Chapter is dedicated to importing files using some of the basic features we have learned. We learn how to open and edit text files in .csv format, in addition to various other formats.

Chapters explain Pythons most important data mining packages: NumPy and SciPy for mathematical functions and random data generation, pandas for dataframe management and data import, Matplotlib for drawing charts, and scikit-learn for machine learning. With regard to scikit-learn, the discussion is limited to basic coverage of the code of the various algorithms. Because of the complexity of the topic, we do not examine the details for the various techniques.