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PYTHON PROGRAMMING:

The Ultimate Beginners Guide to Master Python programming Step by Step with Practical Exercices

Charles Walker

Copyright 2019 Charles Walker

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Table of Contents

Introduction

Python is one of todays most powerful and beginner friendly programming languages. In recent years it has gained more ground as the technology of choice for fields such as Machine Learning, Deep Learning, and Data Science. Theres never been a better time to start learning how to program with Python.

The purpose of Python Programming: The Ultimate Beginners Guide to Master Python programming Step by Step with Practical Exercices is to make this amazing programming language as available as possible, no matter your current skill and knowledge of programming. With the help of this guide you will get started in no time, even if your knowledge on the topic is nonexistent.

Every chapter in this book is layered in such a way to teach you every core programming concept step by step. Furthermore, you will not learn only theory and challenging definitions that make you fall asleep. You will go through a number of practical examples and exercises in parallel and practice everything you learn. Keep in mind that without practicing every concept and writing your own code you will not manage to get too far. Programming doesnt require any special talents. All you need is practice, practice, and more practice. So let this book guide you, and make sure you take a break every now and then to experiment and come up with your own little programs. Python is the future!

Chapter 1: Getting Started

Programming is becoming an increasingly demanded skill for anything from web design to Machine Learning and the Internet of Things. Its on its way to having a daily use due to the importance of technology. While programming used to be a subject that people started studying for their computer science degree, now it is often taught starting from elementary school. One of the main reasons for its widespread use is accessibility. You dont need much to get started. Thanks to the power of the Internet, all you need is a computer and a number of software tools which you can download and install without spending a penny. In addition, there are many resources to learn from, as well as organized communities you can join and learn from.

In this chapter you are going to learn why Python is one of the best programming languages to start with, as well as progress your career if this isnt your first language. Furthermore, you will explore the tools you need, install them, and start your journey. This chapter will guide you step by step and show you everything you need to know in order to get started. If you are already familiar with any other programming language such as C, C++, or Java, you might want to skip this chapter or simply glance through it to refresh your memory.

Why Python?

Python is a versatile and powerful programming language that was developed in 1991 by Guido van Rossum. As a fun fact, you should know that the name of the language doesnt come from the snake which bears the same name. Guido named his project Python after Monty Python, which was a British comedy group he was a big fan of. If you happen to a fan as well, you fill find several Easter Eggs within the official documentation of the language.

Since 1991, Python has been used to introduce people to programming due to its simple syntax, as well as to create complex programs or analyze massive amounts of data. As a beginner, with Python you will be able to quickly write a basic program. However, you can easily scale it further and turn it into a commercial project. The main reason why Python is so popular for beginners is the fact that the language is easy to read and write. Its structure is human-like and easy to understand, therefore the code is very user-friendly. This means that you shouldnt find it too difficult to remember the language and structure. In addition, Python comes with a number of libraries and premade functions that you can immediately add to your code. This way you can save time. In many ways its like playing with Legos. As long as you pace yourself, learn and practice everything in this book, and extend your knowledge using other resources, you will be able to write a program that you will understand ten years from now. Program maintenance is a crucial part of your responsibilities as a programmer, but luckily Python code is easy to administrate compared to other languages. With that in mind, lets briefly explore the plethora of reasons why you should learn Python instead of any other languages. After all, Python isnt quite the only language that offers you the advantages youve learned about so far.

1. User-friendly: The purpose of a programming language is to form the connection between human and computer. Python, like C# and Java, is a high level programming language, which means that it is quite far from the machine language which the computer then processes. The opposite of this is the low level language, which usually refers to assembly language or machine code. In other words, Python is close to English. This allows you to write code as fast as you write any sentence, once you learn the rules and the syntax.
2. Powerful: Sometimes Python is looked down upon because it is so easy to learn and its usually the first language programmers explore, whether on their own or at computer science 101. However, Python is a very powerful language that is just as versatile and efficient as more complex languages such as C++. Python is used in every technical department in companies like Google, Microsoft, IBM, Xerox, NASA, and many more. You can even use Python in game development if you prefer to practice a programming language in a more artistic way.
3. OOP: Object oriented programming is many times the optimal computer problem solver. It is a methodology that offers a method of defining data and actions as objects. This type of programming is not always necessary, however, when working on large applications it is usually the most optimal approach. For instance, programming languages such as C# and Java are object oriented. Python can be considered an object oriented language as well, however this feature is optional. The other mentioned languages dont offer such versatility. This means that with Python you dont necessarily have to learn the object oriented methodology from the start. This is one of the reasons why its so much easier to start programming with Python than C++. However, you have the massive benefits of OOP at your fingertips, but only when you actually need it. If you are working on a basic program, theres no need for it. Python offers you all the power and versatility you need.