Python Loops Explained (For & While)

📌 Quick Info

• Topic: Loops in Python (For & While)
• Target Audience: Beginners who know if-else
• Goal: Understand when to use for vs while

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1. Introduction

"After learning if-else, I could make my code decide things. But I still had to write the same line 10 times for 10 items. Then I discovered loops — and everything got shorter."

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2. The Problem (Without Loops)

print("Item 1")
print("Item 2")
print("Item 3")
print("Item 4")
print("Item 5")

Problem: Imagine doing this for 100 times.

3. The Solution (For Loop)

for i in range(1, 6):
    print(f"Item {i}")

Output:

Item 1
Item 2
Item 3
Item 4
Item 5

4. The Solution (While Loop)

count = 1
while count <= 5:
    print(f"Item {count}")
    count += 1

Output:

Item 1
Item 2
Item 3
Item 4
Item 5

5. For vs While: When to Use Which

Use for when...	Use while when...
You know how many times	You don't know how many times
Looping through a list	Looping until a condition changes

6. What I learned

• Loops save me from repeating code.
• for is for know counts.
• while is for unknown counts
• range (1,6) goes from 1 to 5- it stops before the second number. So, range (1,6) gives you 1,2,3,4,5

7. Conclusion

Loops felt confusing until i wrote them 5 times. Now i use them almost everywhere