Learn Python

This tutorial is designed to help you get started with Python quickly and effectively. In just 10 minutes, you’ll learn essential concepts and be able to write basic Python code.

Getting Started with Python

Python is a versatile programming language known for its simplicity and readability. Follow these examples to understand its syntax and capabilities.

Variables and Data Types

In Python, variables are used to store data values. You don’t need to declare a variable type; Python infers it automatically.

# Integer
age = 25

# Float
height = 5.9

# String
name = "John"

# Boolean
is_student = True

Basic Operations

Python supports basic arithmetic operations like addition, subtraction, multiplication, and division.

# Addition
a = 10
b = 5
result = a + b

# Subtraction
result = a - b

# Multiplication
result = a * b

# Division
result = a / b

Control Structures

If-Else Statements

Control the flow of your program using conditional statements.

age = 18

if age >= 18:
    print("You are an adult.")
else:
    print("You are a minor.")

Loops

Use loops to execute a block of code multiple times.

# For loop
for i in range(5):
    print("Iteration", i)

# While loop
count = 0
while count < 5:
    print("Count is:", count)
    count += 1

Functions

Functions in Python help organize code into reusable blocks.

def greet(name):
    return "Hello, " + name

message = greet("Alice")
print(message)

Working with Lists

Lists in Python allow you to store multiple items in a single variable.

fruits = ["apple", "banana", "cherry"]
print(fruits[0])  # Output: apple

# Add an item
fruits.append("orange")

# Remove an item
fruits.remove("banana")

Dictionaries

Dictionaries store data in key-value pairs.

person = {
    "name": "Alice",
    "age": 25,
    "city": "New York"
}

print(person["name"])  # Output: Alice

Simple Math Operations

Python can handle mathematical calculations directly.

import math

# Square root
print(math.sqrt(16))  # Output: 4.0

# Pi constant
print(math.pi)  # Output: 3.141592653589793

With these basics, you’re ready to start exploring Python. Practice by writing small programs to reinforce these concepts. Happy coding!