Python Programming! Conditional Statements Lectures 5

Lets Start Python Programming For Beginners to advanced. Conditional Statements, Lectures 5

🐍 Lecture 5: Conditional Statements

🎯 Goal

By the end of this lecture, you will:

• Understand how to use if, elif, and else statements.
• Be able to make decisions in your code based on user input or values.
• Build simple decision-based games or tools.
• Learn how indentation works in Python.

🧠 What Are Conditional Statements?

Conditional statements are like asking a question in your code:

“If this is true, do that. Otherwise, do something else.”

They help your program make decisions — just like you do every day!

🔁 The if Statement – Making Choices

The simplest conditional statement is if.

Syntax:

if condition:
    # Do something if condition is True

Example:

age = 10

if age >= 13:
    print("You can join the club!")

👉 Output:
Nothing happens because 10 is less than 13.

Let’s try again with a higher age:

age = 14

if age >= 13:
    print("You can join the club!")

👉 Output:

You can join the club!

❌ The else Statement – If Not, Then…

If the condition is not true, we can use else to say what should happen.

age = 10

if age >= 13:
    print("You can join the club!")
else:
    print("Sorry, you’re too young.")

👉 Output:

Sorry, you’re too young.

🔄 The elif Statement – More Choices

Use elif (short for “else if”) to check more conditions.

score = 85

if score >= 90:
    print("Grade: A")
elif score >= 80:
    print("Grade: B")
elif score >= 70:
    print("Grade: C")
else:
    print("Grade: D or lower")

👉 Output:

Grade: B

💡 Indentation Matters!

In Python, indentation (spaces at the start) tells Python which lines belong to the if, elif, or else.

✅ Correct:

if age > 10:
    print("You are older than 10")
    print("That’s cool!")

❌ Wrong:

if age > 10:
print("You are older than 10")  # ❌ No indent!

Python will show an error here!

🧪 Try It Yourself!

Write a program that asks the user for their favorite animal and gives a fun response.

Example:

animal = input("What is your favorite animal? ")

if animal == "dog":
    print("Woof! Dogs are awesome friends.")
elif animal == "cat":
    print("Meow! Cats are super cute.")
elif animal == "dolphin":
    print("Splash! Dolphins are smart and playful.")
else:
    print("Cool choice! That’s a unique animal.")

🎮 Mini Project: Rock, Paper, Scissors Game

Let’s build a simple version where the player vs computer chooses rock, paper, or scissors.

We’ll keep it simple for now — full game next time!

player_choice = input("Choose rock, paper, or scissors: ")
computer_choice = "rock"  # For now, computer always picks rock

if player_choice == computer_choice:
    print("It’s a tie!")
elif player_choice == "paper":
    print("You win! Paper beats rock.")
else:
    print("Computer wins! Rock beats scissors.")

🧒 Kids Corner

🧠 Imagine you’re choosing what to wear based on the weather:

• If it’s raining → Wear a raincoat.
• Else if it’s sunny → Wear shorts.
• Else → Stay cozy inside.

That’s exactly what if, elif, and else do in code — help your program make choices!

🚀 Challenge (Optional)

Make a Magic Door Adventure game where the user picks a door (1–3), and each door has a surprise.

Example:

door = int(input("Choose a door (1, 2, or 3): "))

if door == 1:
    print("A dragon appears! Run!")
elif door == 2:
    print("You found a treasure chest!")
elif door == 3:
    print("Oops! You fell into a trap.")
else:
    print("Invalid choice! Pick 1–3.")

📌 Summary

• Use if to check a condition.
• Use else for what to do if the condition is false.
• Use elif to check more conditions.
• Indentation is very important in Python.
• Conditional statements let your programs make decisions like humans.

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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