1. Introduction to the Python language

Programming languages ​​are a way of telling a computer what to do. It's like giving orders to a robot, but instead of using words, we use a special language called code. Programming languages ​​have their own rules and syntax, and each is suitable for different purposes.

Programmers write code to do things like create video games, desktop applications, mobile apps, or web pages. They can even use programming languages ​​to analyze large amounts of data and make predictions.

Programming languages ​​are used in a wide variety of fields, from computer science and engineering to finance and data analysis. Knowledge of a programming language is a valuable skill for anyone who wants to work in the field of technology.

In this course we will learn to program in Python language. Python is a very popular and very powerful programming language. It is used to do many different things, such as building web applications, analyzing data, creating artificial intelligence programs, and even controlling robots. It is a very easy language to learn and has a clear and simple syntax, which means that it is easy to read and write.

Also, there is a lot of information and resources available online for learning Python, making it even more accessible. You can find tutorials, books, and videos to help you get started programming in Python.

Would you like to be a programmer in the future? Learning Python is a great start! With dedication and practice, you can do a lot of amazing things with this language. Good luck on your Python learning journey!

Python's IDLE environment

To start programming we are going to open the standard Python programming environment, called IDLE. Click on the Windows icon and type the word IDLE. Then click on the IDLE icon.

Logotipo del entorno IDLE

A programming environment will appear like the one you can see in the following image:

Entorno IDLE

Now, to start, we'll type a simple count: 5 + 16 and hit enter (or return) at the end. The screen will show the result in the following line:

Entorno IDLE con una suma

We can write any simple operation or more complex operations. This environment is called an interactive environment, because Python receives typed commands and returns responses immediately.

Python macros

Another way of programming is to create command files that will be executed later when we want. This other way of programming has the disadvantage of not being interactive, we do not receive a response to each order we write. The advantage of writing macros is that we can have many commands written to execute them whenever we want and as many times as we want.

To create a new macro, click inside IDLE on the File option and then on New File.

Nuevo fichero en el entorno IDLE

A new window will open where we can write orders, but without receiving responses. You can no longer see the cursor with three >>> symbols. We will write within this window the orders that can be seen below:

Nuevo fichero en el entorno IDLE

When we're done, we'll save this exercise to the Python folder on data drive D:


Now we can run the program by clicking on the Run menu or by pressing the F5 function key. The result will be the following:

Nuevo fichero en el entorno IDLE

We can run this program as many times as we want and we can add as many commands as we want to the program.