<h3><mark>How to Install Python</mark></h3>

To check if you have python installed on a Windows PC, search in the start bar for Python or run the following on the Command Line (cmd.exe):
C:\Users\Your Name>python --version
To check if you have python installed on a Linux or Mac, then on linux open the command line or on Mac open the Terminal and type:
python --version
If you find that you do not have python installed on your computer, then you can download it for free from the following website: https://www.python.org/(Accrotding to your operating system and Bit system.)

Start Programming In Python

Python is an interpreted programming language, this means that as a developer you write Python (.py) files in a text editor and then put those files into the python interpreter to be executed. it means that the extension of all the files is only .py. The way to run a python file is like this on the command line:

HelloWorld In Python

C:\Users\Your Name>python helloworld.py
Where "helloworld.py" is the name of your python file. Let's write our first Python file, called helloworld.py, which can be done in any text editor.
print("Hello, World!")

Output:Hello, World!
Simple as that. Save your file. Open your command line, navigate to the directory where you saved your file, and run:
C:\Users\Your Name>python helloworld.py

Welldone, you have written and executed your first Python program.