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Knox - Python for Beginners: A Step by Step Crash Course to Learn Smarter the Fundamental Elements of Python Programming, Machine Learning, Data Science and Tools, Tips and Tricks of This Coding Language

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Python for Beginners: A Step by Step Crash Course to Learn Smarter the Fundamental Elements of Python Programming, Machine Learning, Data Science and Tools, Tips and Tricks of This Coding Language
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Knox / Jason
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Python for Beginners

A Step by Step Crash Course to Learn Smarter the Fundamental Elements of Python Programming, Machine Learning, Data Science and Tools, Tips and Tricks of This Coding Language

Table of Contents

Introduction

Congratulations on purchasing Python for beginners: A Step by Step Crash Course to Learn Smarter the Fundamental Elements of Python Programming, Machine Learning, Data Science and Tools, Tips, and Tricks of This Coding Language , and thank you for doing so.

This book is made for all those interested in learning from scratch how to start coding and programming on Python. If you already have some knowledge of this language or another one, you will find very interesting and important information here that we are sure you didnt know.

In the following chapters of this book you will be able to get started into the world of programming, starting with an introductory chapter, where you are going to learn about the Python differences, advantages, uses, some information about Machine learning and Data science, and even how to install it according to your operating system. After the introductory chapter, are all of the fundamental elements of Python like data types, operators, control statements, loops, functions, modules, OOP (Object-oriented programming), file management, and some other extra information.

It is really important to start programming and putting into practice everything here explained, since, if this is not done, commands, syntax and many other things will be forgotten.

Good luck, and welcome to the future.

There are plenty of books on this subject on the market, thanks again for choosing this one! Every effort was made to ensure it is full of as much useful information as possible, please enjoy it!

Chapter 1: Introductory Chapter

What Is Python?

Python is a very versatile interpreted language developed by Guido Van Rossum. It is a high-level programming language with a user-friendly approach, it is an object-oriented programming language, with dynamic typing and easy to interpret syntax, all these features make this language ideal for scripting, as well as we can use it to make applications in a variety of areas.

Programming is a fascinating, creative, and rewarding activity. That is why, in this book, we are going to explain to you from the simplest point of view how we can program in this language, assuming that we all need and want to know how to do programming. You need to know Python's vocabulary and grammar, as well as how to correctly interpret the words of this language, and how to build well-formed phrases. Once you know correctly how to work in this language, it will be much easier to work in other programs such as JavaScript or C++, where you will be able to realize that each language has its own grammar and vocabulary, but, after all, the solution to each of the problems is going to be the same regardless of the programming code you are using.

Learning Python for beginners is basically like learning to write and to interpret that writing, this language has a very reduced vocabulary, conformed by words that have a particular meaning for Python, the particular meaning that has each word is what is known in language as "keywords", as an example of these words in Python we have the following:

And, as, assert, break, class, continue, def, del, elif, else, except, finally, for, from, global, if, import, in is, lambda, nonlocal, not, or, pass, raise, return, try, while, with, yield, among others, are some of the "keywords" that you will use in this programming language.

Python has the advantage of being a free code and easy access, with a quite large library, in addition to a very large community of programmers, making it much easier to use, it also offers a better error checking than programming in C. This a language of very high level, among its many other features Python will allow you to separate the program into modules that later you will be able to reuse, in addition, it has a collection of standard modules that you can use as a base for your programs.

Python is also an interpreted language; this term tells you that you will not have the need to compile or link particularly. You will be able to use this interpreter interactively. This programming code will allow you to write compact and readable programs, besides Python programs are considerably shorter than those made in C++, for example, and this is particularly due to the syntax used.

Which Are the Advantages of Using Python?

As the main advantage, we can mention that this language has a method that simplifies programming a lot more, and this method is based on proposing a pattern to follow, which is why it is considered a great language for scripting. It is a script code; this means that you don't have to declare constants and variables before using them. Also, as it is an interpreted language, when you run the program, all the lines of the program are not read, only those that are being executed at that moment, so it can be said that it goes line by line, which makes it more manageable. It has a high speed in development; it can be used on multiple platforms; it is an open-source language; therefore, communities and users can create their own versions or create add-ons that may or may not be added to the following versions of Python.

Another advantage is that it is an elegant and flexible language, where the language itself has the ability to give you a large number of tools, and the flexibility allows you not to worry so much about the details. It is versatile, which will allow you to develop websites, create graphical user interfaces, software and games, system prototypes, client applications, distributed systems, scientific tasks such as simulations or prototypes. Another of its great advantages is that it is easy to develop, simple and fast, and its library does most of the work. Moreover, it supports large database storage and is ideal for combining several components, which is why it is also known as a glue language, and this way, we can use Python with C, with Java, etc .

Differences Between Python and Other Programming Languages

Python runs programs on the operating system, and generally, if you want to run some JavaScript on the operating system you have to use NodeJS , you can take it as a Python interpreter, because thanks to this program you will be able to run JavaScript programs just like you would run Python ones.

There is no better language than another, what differentiates them are the tools used by each one, and the applications that each one can generate. The main objective is to be able to solve a problem in the best and most optimal way.

In the case of Python and JavaScript, both are interpreted languages, so you will see in practice a file, and you will write your code in this file, you save it so that the computer can execute it, but for this to happen you will need an extra program that interprets these codes and allows the computer to read it, and this is what an interpreter does, if we install it in Linux you will be able to interpret the code in Linux, if we install it in Windows you will be able to interpret the code there and in the same way in Mac. Both languages would then be multiplatform.

Both languages have Open Source syntax; this means that you can see how the codes of the standard libraries are written, so you will be able to see more easily how each of these programs is developed.

Now let's talk about the differences between both languages. JavaScript (JS) was a language that was born to add interactivity to the browser. In JS, the functionality that brings the language itself is very minimal, since it lacks a large amount of codes it is complemented with another tool called npm , this way you will be able to download codes from the internet to complement this functionality because JS does not include all of the tools. It is at a disadvantage compared to Python because you are going to find a wide variety of codes that you will have to choose which one you are going to use. In Python, you will find certain types of applications in which it is unique. In JS, the most popular default type of application are web applications, web-based applications, both in the server and browser environment .

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