Khalid Ahmad Khattak

Lesson 1 – What is Python?

Python is a well-known programming language used by students, developers and many of the world’s largest organisations. It is popular because it is simple to write, easy to understand and extremely powerful. You will find Python being used in artificial intelligence, automation, robotics, website development, scientific research, game development and many other areas.

When you create a Python program, you are giving clear step-by-step instructions to the computer. The computer follows these instructions in order, from top to bottom. By learning even the basics of Python, you can build programs that display information, solve problems, process data and perform useful tasks automatically.

Why Learn Python?

• It has a clear structure that is easy for beginners to read and understand
• It is used by major companies such as NASA, Google, Microsoft and Meta
• Python supports artificial intelligence, data science and automation
• You can use it on Windows, Mac, Linux and online platforms
• It is suitable for complete beginners as well as experienced programmers

Your First Python Program

A programmer’s journey usually begins with a simple instruction that displays a message. This helps you see how Python reads your code and produces an output.

print("Hello, World!")
            

When Python runs this instruction, it shows the message inside the quotation marks exactly as it is written.

Examples for Beginners

Example One: How can I show a welcome message?

print("Welcome to your first Python lesson")
            

Explanation: The print instruction makes Python display whatever is inside the quotation marks.

Output:

Welcome to your first Python lesson
            

Example Two: How can I show two lines of text?

print("Learning Python is fun")
print("You are doing great")
            

Python reads each instruction from top to bottom. Because there are two print instructions, the messages appear on separate lines.

Learning Python is fun
You are doing great
            

Example Three: Can Python perform a calculation?

print(12 + 8)
            

Explanation: Python adds the numbers and shows the result.

Output:

20
            

Example Four: What happens when I mix text and numbers?

print("The total is", 5 + 3)
            

Python displays the sentence first and then calculates the number eight.

The total is 8
            

Check Your Understanding

Select an answer and reveal the correct one afterwards.

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