PYTHON FOR ABSOLUTE BEGINNERS

INTRODUCTION
Welcome to Python for Absolute Beginners, a simple and practical guide designed for anyone starting programming.

CHAPTER 1: WHAT IS PYTHON?
Theory: Python is a high-level, readable programming language that hides complex details, making it ideal for beginners.

Why Python?

Easy to learn

Huge community support

Many libraries available

Works on all platforms

CHAPTER 2: INSTALLING PYTHON
Theory: Installing Python sets up the interpreter that executes your code.

Windows Steps:

Download Python from the official website

Enable Add Python to PATH

Verify using: python --version

macOS / Linux:

Check version using: python3 --version

CHAPTER 3: YOUR FIRST PYTHON PROGRAM
Theory: The print() function displays output and confirms your setup works.

Example:
print("Hello, World!")

CHAPTER 4: PYTHON BASICS
Theory: Variables, data types, and input/output form the foundation of Python programming.

Variables:
name = "Sharanu"
age = 25

Data Types:

int

float

string

boolean

list

tuple

dictionary

Input:
x = input("Enter value: ")

Type Conversion:
num = int(input("Enter a number: "))

Comment:

This is a comment

CHAPTER 5: OPERATORS
Theory: Operators allow Python to perform calculations and logical decisions.

Arithmetic Operators:
+, -, , /, %, //, *

Comparison Operators:
==, !=, >, <, >=, <=

Logical Operators:
and, or, not

CHAPTER 6: CONDITIONAL STATEMENTS
Theory: Conditions help programs make decisions.

Example:
age = 18
if age >= 18:
print("Adult")
else:
print("Minor")

CHAPTER 7: LOOPS
Theory: Loops repeat tasks without writing repeated code.

For Loop:
for i in range(5):
print(i)

While Loop:
i = 0
while i < 5:
print(i)
i += 1

CHAPTER 8: FUNCTIONS
Theory: Functions organize reusable blocks of code.

Example:
def add(a, b):
return a + b

print(add(3, 5))

CHAPTER 9: LISTS, TUPLES, DICTIONARIES
Theory: These structures store multiple values effectively.

List:
fruits = ["apple", "banana", "orange"]

Tuple:
point = (10, 20)

Dictionary:
person = {"name": "Sharanu", "age": 25}

CHAPTER 10: FILE HANDLING
Theory: File handling helps store and retrieve external data.

Example:
with open("data.txt", "w") as f:
f.write("Hello file!")

CHAPTER 11: ERROR HANDLING
Theory: Try-except blocks prevent program crashes due to errors.

Example:
try:
x = 10 / 0
except ZeroDivisionError:
print("Cannot divide by zero")

CHAPTER 12: MODULES AND PACKAGES
Theory: Modules contain reusable code; packages organize modules.

Example:
import math
print(math.sqrt(16))

CHAPTER 13: OBJECT-ORIENTED PROGRAMMING
Theory: OOP models real-world objects in code using classes.

Example:
class Person:
def init(self, name):
self.name = name

def greet(self):

print("Hello, " + self.name)

p = Person("Sharanu")
p.greet()

CHAPTER 14: VIRTUAL ENVIRONMENTS
Theory: Virtual environments isolate project dependencies.

Example:
python -m venv env
source env/bin/activate

CHAPTER 15: POPULAR PYTHON LIBRARIES

NumPy

Pandas

Matplotlib

Flask

Django

Requests

CHAPTER 16: MINI PROJECTS

Calculator

To-Do CLI App

Guess the Number Game

Simple Chatbot

CONCLUSION
You now have a strong foundation in Python. Build projects, practice consistently, and keep learning.