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Home Forums Explain the Python While Loops with example. – MindStick
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1 Answers

Anubhav Sharma
Anubhav Sharma 24 Sep 2025
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A while loop keeps running as long as a condition is True.
It’s useful when you don’t know in advance how many times you need to loop.

Syntax

while condition:
    # code block
  • condition → a Boolean expression (True or False)
  • The loop continues until the condition becomes False

Examples

1. Basic while loop

i = 1
while i <= 5:
    print(i)
    i += 1   # increase i

Output:

1
2
3
4
5

2. Infinite loop (careful!)

while True:
    print("This will run forever!")
    break  # use break to stop it

3. Using break

i = 0
while i < 10:
    if i == 5:
        break
    print(i)
    i += 1

Output:

0
1
2
3
4

4. Using continue

i = 0
while i < 6:
    i += 1
    if i == 3:
        continue
    print(i)

Output:

1
2
4
5
6

5. While loop with else

i = 1
while i <= 3:
    print(i)
    i += 1
else:
    print("Loop finished!")

Output:

1
2
3
Loop finished!

Key difference between for and while:

  • for → best when you know how many times you want to repeat.
  • while → best when you repeat until a condition changes.
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