Introduction to Python
A popular programming tool with simple, complete novice syntax is Python structure of paragraphs, phrases, and words. Due to its widespread use, this has a large community that provides users with access to frameworks, platforms, and tools to get going.
Why is Raspberry Pi using it?
Python needs a Python Interpreter to operate on any device, since then Linux, an OS for the Raspberry Pi, has been developed for it, executing a Python Interpreter is not problematic. Since it can be used for software setups on the Raspberry Pi, it is utilised for both scripting and filled programming!
Purpose of Python?
Python is a versatile programming language that has a wide range of uses across numerous sectors, including:
- Web application development
- development of GUI apps
- computer software, development of games, and coding
- Artificial intelligence and machine learning
- Projects for the Raspberry Pi include turning on and off LEDs.
The applications some of them seem complicated. However, Python makes it simple to handle difficult issues or programmes with fewer source code, saves you energy and effort.
We've already proved that Python employs a far simpler language than C# and Java, then what about them? Java is a fully fledged web software program, but C# requires a greater knowledge of language structures.
Python Programme Writing and Execution Techniques
The work Mastering Python 5th Ed. (O'Reilly) by Mark Lutz is an excellent instructional providing everything a developer wishes to learn about Python. However, we will only go through the fundamentals of developing and running a Python programme here.
We must first install an operating system on our SD card in order to begin. Raspbian is the name of the linux depenedent operating system that the Raspberry Pi uses. The Raspbian operating system is simple to set up and operate and offers a window-based user interface (UI) similar to Windows.
Once downloaded, Raspbian must be flashed onto our SD card using a tool called Etcher. Etcher, which supports Windows, Linux, and MacOS, can be downloaded from the online official page. Open Etcher after installation, choose the Raspbian zip file, and then push flash.
Starting the IDE
Now that the Raspbian operating system has started, it's time to settle in and create our first Python programme. We begin by launching the Python programming IDE, or integrated development environment. A text editor that also enables us to run and debug programmes is referred to as an IDE. The Thonny IDE for Python development is part of the Raspbian operating system.
Python Installation and Updates
Python versions 2 and 3 are pre-installed under Raspbian operating systems, but you can upgrade Python or install it on every Linux OS by executing one of the following commands first at command prompt. Python versions 2 and 3 are which was before on Raspbian hardware and software, but you can upgrade Python or install it on another Linux OS by executing one of the following specifications at the command line:
Upgrades or Install Python3
sudo apt-get install python3
Upgrades or Installs Python2.
sudo apt-get install python
Launching the REPL in Python
Enter python or python3 based about which release you wish to use to reach the Python REPL (that you may enter Py instructions much like the command prompt):
Enter Ctrl-D to exit the REPL.
Programming in Python
We'll create a basic "hello world" programme to show how to create and run a Python programme. To get started, launch the Nano text editor and type the following at the command prompt to create a new file called hello-world.py:
sudo nano hello-world.py
After entering the following code in Nano, save the file by pressing Ctrl-X and Y.
A ".py" extension must be used for all Python programme files. Any text editor, including such Notepad or Notepad++, can be used to create the programme; just be careful to do anything to save file with the ".py" extension.
Running Python Code
Proceed to the directory where you stored your document and enter the following at the command line to launch the programme without designating it executable:
Create an Executable Python File
You can launch a Python programme without first typing "python" before the file name by making the programme executable. Entering the following at the command prompt will make a file executable:
chmod +x file-name.py
All you have to enter at this point to start the software is: