Python Basics: Variables, Data Types, and Object-Oriented Programming

Variables

In Python, you do not need to explicitly declare variable types; variable names can be assigned directly.

x = 10

y = "Hello, World!"

z = 3.14

Data Types

Numbers: integers (int), floating‑point numbers (float), complex numbers (complex).

Strings: represented with single or double quotes.

Lists: ordered collections that can contain elements of different types.

Tuples: immutable ordered collections.

Classes and Objects

Defining a class

Use the class keyword to define a class.

class Person:

def __init__(self, name, age):

self.name = name

self.age = age

def greet(self):

return f"Hello, my name is {self.name} and I am {self.age} years old."

# Create an object

p = Person("Alice", 25)

print(p.greet())

Summary

The above is a detailed explanation of Python basic syntax, covering variables, data types, control structures, functions, modules, exception handling, file operations, and object‑oriented programming.