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Python while Loop (with Examples)

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🐍 Python while Loop – The Fun Way​

Welcome to the world of loopy logic! 😄
Let’s talk about Python’s while loop — the loop that just keeps going... until it’s told to stop.

1. 🌀 The while Loop​

A while loop repeats a block of code as long as a certain condition remains True.
Think of it like watching episodes of your favorite show until Netflix asks, “Are you still watching?”

Use Case?
When you don’t know how many times something needs to run, but you're willing to keep going till some condition says, "That's enough!"

Example: Print numbers from 1 to 5​

i = 1
n = 5
while i <= n:
  print(i)
  i += 1

Program Output:

1
2
3
4
5

Here’s what’s happening:

  • i starts at 1.
  • As long as i <= 5, we keep printing and incrementing i.
  • Once i hits 6, the condition becomes False, and the loop bails out.

⚠️ Warning:
If you forget to update i, this loop could go on forever — and you may end up staring at your screen until the end of time. 🕰️

Oh, and remember: Python loves indentation. Get it wrong and Python throws a tantrum. 😤

2. 🎬 while Loop + else Statement​

Yes, you read that right — while loops have else clauses too!
The else block kicks in when the loop condition becomes False (and NOT when broken out early).

Example​

i = 1
while i <= 5:
  print(i)
  i += 1
else:
  print('The while loop ends')

Program Output:

1
2
3
4
5
The while loop ends

👋 It’s like the loop’s way of saying goodbye once it’s done looping.

3. 💥 break – Emergency Exit​

The break statement lets you bail out of the loop early.
Perfect for those “I’m done here” moments.

Example1​

i = 1
while i <= 5:
  print(i)
  if i == 3:
    break
  i += 1
print("Statement after while loop")

Program Output:

1
2
3
Statement after while loop

Notice: The loop could have gone till 5, but we slammed the brakes at 3. 🛑

4. ⏭️ continue – Skip and Move On​

Sometimes you don’t want to exit the loop — you just want to skip a single iteration and keep going.
Enter: continue.

Example: Print only odd numbers​

i = 0
while i <= 5:
  i += 1
  if i % 2 == 0:
    continue
  print(i)
print("Statement after while loop")

Program Output:

1
3
5
Statement after while loop

Even numbers are given the cold shoulder here. ❄️
When i is even, we skip the print and go back to the top of the loop.

🎉 That’s a wrap on Python while loops!

Got questions? Loop back to me anytime! 😉

Happy Learning & Happy Looping! 🚀