Day 4: Python Loops Adventure

1 Why Loops? 🤔

💡Problem: Printing "Hello" 10 times without loops = 10 lines of code!

# The LONG way (boring!)
print("Hello")
print("Hello")
print("Hello")

print("---")

# The LOOP way (awesome!)
for i in range(3):
    print("Hello")

✨Magic! The loop repeats the indented code automatically! Change 3 to 10 and watch!

2 Your First For Loop 🔄

📚Learn: A for loop repeats code for each number in a range!

Start

→

Do action

→

Repeat

→

Done!

# Loop from 0 to 4
for number in range(5):
    print("Count:", number)
    
print("Blast off! 🚀")

🔢Notice: number changed from 0 to 4! Python starts counting at 0.

3 Understanding Range 📏

🎯Learn: range() creates sequences of numbers!

Range Examples:

range(5) → 0, 1, 2, 3, 4
range(1, 6) → 1, 2, 3, 4, 5
range(0, 10, 2) → 0, 2, 4, 6, 8
range(10, 0, -1) → 10, 9, 8, ..., 1

# Count 1 to 5
for i in range(1, 6):
    print(i)

print("---")

# Count by 2s
for i in range(0, 11, 2):
    print(i)

🧪Try: range(10, 0, -1) to count backwards from 10 to 1!

4 Multiplication Table! ✖️

🧮Build: Create any multiplication table with loops!

number = input("Which times table? ")
number = int(number)

print("Times table for", number)
print("---")

for i in range(1, 11):
    result = number * i
    print(number, "x", i, "=", result)

🌟Try: Enter 7 for the 7 times table! Test with 3, 9, or 12!

5 Pattern Maker! 🎨

🔺Challenge: Create cool patterns with loops!

# Growing triangle
for i in range(1, 6):
    stars = "*" * i
    print(stars)

print()

# Countdown
for i in range(5, 0, -1):
    line = str(i) * i
    print(line)

💡Try: Make patterns with emojis! Use "🌟" * i or "❤️" * i

6 Number Guesser Game! 🎮

🎯Final Project: Build a guessing game with 3 attempts!

secret = 7
print("=== GUESS THE NUMBER ===")
print("I'm thinking of 1-10")
print("You have 3 tries!")

for attempt in range(1, 4):
    guess = input("Guess: ")
    guess = int(guess)
    
    if guess == secret:
        print("🎉 YOU WIN!")
        break
    elif guess < secret:
        print("📈 Higher!")
    else:
        print("📉 Lower!")
    
    if attempt == 3:
        print("Game Over! It was", secret)

🚀Upgrades:

Change secret to a random number
Give 5 attempts instead of 3
Make range 1-100 for hard mode
Add a score counter

🔁 Python Loops Adventure - Day 4

1 Why Loops? 🤔

2 Your First For Loop 🔄

3 Understanding Range 📏

4 Multiplication Table! ✖️

5 Pattern Maker! 🎨

6 Number Guesser Game! 🎮

🎉 You're a Loop Master! 🎉