Lets Start Python Programming For Beginners to advanced. Operators in Python, Lectures 4.
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🐍 Lecture 4: Operators in Python
🎯 Goal
By the end of this lecture, you will:
- Understand what operators are and how they work.
- Be able to use arithmetic , comparison , and logical operators.
- Write simple programs using math and logic.
- Build a mini calculator or number comparator.
🧠 What Are Operators?
Operators are symbols like +, -, *, / that help you do math or compare things.
They’re just like in math class — but now you get to use them in code!
➕ 1. Arithmetic Operators – Doing Math
These are used for basic math operations.
| Operator | Name | Example |
|---|---|---|
+ | Addition | 5 + 3→8 |
- | Subtraction | 10 - 4→6 |
* | Multiplication | 3 * 5→15 |
/ | Division | 10 / 2→5.0 |
// | Floor Division | 7 // 2→3 |
% | Modulus (Remainder) | 10 % 3→1 |
** | Exponent | 2 ** 3→8 |
Example Code:
print(5 + 3)
print(10 / 2)
print(7 % 3)👉 Output:
8
5.0
1🧒 Kids Corner: Think of operators like buttons on a calculator — each one does something special!
🔢 2. Comparison Operators – Comparing Values
These help you compare two values. They return either True or False.
| Operator | Meaning | Example |
|---|---|---|
== | Equal to | 5 == 5→True |
!= | Not equal to | 5 != 3→True |
> | Greater than | 7 > 5→True |
< | Less than | 2 < 4→True |
>= | Greater or equal | 5 >= 5→True |
<= | Less or equal | 3 <= 2→False |
Example:
age = 10
print(age > 5) # True
print(age == 10) # True
print(age < 8) # False🤔 3. Logical Operators – Combining Conditions
Use these when you want to check more than one condition at once .
| Operator | Use Case | Example |
|---|---|---|
and | Both conditions must be true | (age > 5) and (age < 15) |
or | At least one is true | (color == "red") or (color == "blue") |
not | Reverses the result | not(age < 18)→ Is age NOT less than 18? |
Example:
age = 10
if (age > 5) and (age < 15):
print("You are between 6 and 14 years old.")🧪 Try It Yourself!
Write a program that:
- Asks the user for two numbers.
- Adds, subtracts, multiplies, and divides them.
- Prints the results.
💡 Sample Code:
num1 = float(input("Enter first number: "))
num2 = float(input("Enter second number: "))
print(f"Addition: {num1 + num2}")
print(f"Subtraction: {num1 - num2}")
print(f"Multiplication: {num1 * num2}")
print(f"Division: {num1 / num2}")🎮 Mini Project: Simple Calculator
Let’s build a small calculator that tells the user if the first number is bigger than the second .
num1 = int(input("Enter first number: "))
num2 = int(input("Enter second number: "))
if num1 > num2:
print("The first number is bigger!")
else:
print("The second number is bigger or equal.")🧒 Kids Corner
🧠 Imagine you have two toy boxes. You want to know:
- Are they the same size? (
==) - Is one bigger than the other? (
>) - Do I have more red toys OR blue toys? (
or)
That’s exactly what we’re doing with operators — comparing things!
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🚀 Challenge (Optional)
Make a Magic Door Game where the player picks a door (1, 2, or 3), and you tell them what’s behind it using comparisons.
Example:
door = int(input("Choose a door (1, 2, or 3): "))
if door == 1:
print("A dragon appears!")
elif door == 2:
print("You find a treasure chest!")
elif door == 3:
print("Oops! A trap!")
else:
print("Invalid choice!")📌 Summary
- Arithmetic operators help you do math (
+,-,*,/, etc.) - Comparison operators let you compare values (
==,>,<, etc.) - Logical operators combine conditions (
and,or,not) - These tools let you build calculators, games, and smart programs.
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Python Programming For Beginners To Advanced
Python Programming For Beginners! Lecture 1
Python Programming! Variables and Data Types | Lectures 2
Python Programming! Input And Output | Lectures 3
Python Programming! Operators in Python Lectures 4
Python Programming! Conditional Statements Lectures 5
