Writing Your First Program

Development Environment

Before writing our first program, we need to set up the development environment.

Installing Python

1. Visit the official website python.org
2. Download the latest version
3. Install the program with “Add to PATH” option enabled

Code Editor

I recommend using VS Code:

• Free and open source
• Diverse extensions
• Excellent support for multiple languages

First Program

Hello World

# Our first program
print("Hello World!")
print("I'm learning programming")

Interactive Program

# Request user name
name = input("What's your name? ")
print(f"Hi {name}! Welcome to the world of programming")

Simple Calculator

# Simple calculator
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))

print(f"Sum: {num1 + num2}")
print(f"Difference: {num1 - num2}")
print(f"Multiplication: {num1 * num2}")
print(f"Division: {num1 / num2}")

Exercise

Try writing a program that asks the user for their age and calculates their birth year.

In the Next Part

We’ll learn about variables and data types in detail.