Python For beginners part 3

If Statement and Logic in Python

Python's if statement forms the backbone of logic in code. It lets you branch execution based on whether a condition is True or False.
See: Programiz If Statements

Try It Yourself

number = int(input('Enter a number: ')) if number > 0: print(f'{number} is a positive number.') else: print(f'{number} is not a positive number.')

Quick Quiz

What is the output of:
n = -3
if n > 0:
  print('Hi')
Hi
Nothing is printed
Error

If-Else and Elif

For multiple conditions, try editing and running this code (you can change n below!):

n = 5 if n > 0: print('Positive') elif n == 0: print('Zero') else: print('Negative')

Flowchart Example

Video Example

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Math with Python

Python offers straightforward math operators as well as advanced mathematical tools through its libraries.
Resources: Programiz Python Operators

Arithmetic Operators Table

Operator	Name	Example
+	Addition	x + y
-	Subtraction	x - y
*	Multiplication	x * y
/	Division	x / y
%	Modulus	x % y
**	Exponentiation	x ** y
//	Floor Division	x // y

Try Arithmetic Code Live

a = 7 b = 2 print('Sum:', a + b) print('Subtraction:', a - b) print('Multiplication:', a * b) print('Division:', a / b) print('Floor Division:', a // b) print('Modulo:', a % b) print('Power:', a ** b)

Interactive: Advanced Math Functions

import math print(math.sqrt(25)) # 5.0 print(math.pi) # 3.141592653589793

See the official math docs for more.

Concept Video

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Recommended Python Resources

• Real Python – Courses, cheat sheets, and videos.
• Official Python Documentation – Guides and references.
• Planet Python – Aggregated daily tutorials.
• Python Blogs 2025
• Python Quizzes (W3Schools)

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