Introduction to Python

Python consistently ranks as one of the top programming languages worldwide. Whether you want to build websites, analyze data, create AI, or automate tasks, Python has you covered. Here are the top reasons to learn Python:

Python Popularity Rankings

Python consistently ranks in the top 3 programming languages across major indices:

Python powers some of the world's most popular applications and services. From automating simple tasks to building complex AI systems, Python is everywhere!

Companies Using Python

Some of the world's biggest companies rely on Python for their core products:

Every programming language has its strengths. Here is how Python compares to other popular languages you might have heard about:

Let us write your very first Python program! The traditional "Hello, World!" program is the simplest way to start. In Python, it takes just one line of code:

# Your first Python program!
print("Hello, World!")  # Hello, World!

Going Further: Variables and Input

Let us make it interactive by asking for the user's name:

# Ask for user's name and greet them
name = input("What is your name? ")  # User types: Alice
print(f"Hello, {name}! Welcome to Python!")  # Hello, Alice! Welcome to Python!

Basic Math Operations

Python can also work as a calculator:

# Basic arithmetic
x = 10
y = 3

print(x + y)   # 13 (addition)
print(x - y)   # 7 (subtraction)
print(x * y)   # 30 (multiplication)
print(x / y)   # 3.333... (division)
print(x // y)  # 3 (floor division)
print(x % y)   # 1 (remainder)
print(x ** y)  # 1000 (power: 10^3)

Try It Yourself!

Here is a small program that calculates your birth year:

# Calculate birth year
current_year = 2026
age = int(input("How old are you? "))  # User types: 25
birth_year = current_year - age
print(f"You were born in {birth_year}!")  # You were born in 2001!