The while loop continues to execute as long as a condition is True. It’s useful when you don’t know beforehand how many times you need to loop.

Syntax:

while condition:
    # code block

Example:

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

Output:

Count is: 1
Count is: 2
Count is: 3
Count is: 4
Count is: 5

Real-world Example:

Harsha is counting down the days until his vacation:

days_left = 5
while days_left > 0:
    print(f"{days_left} days until Harsha's vacation")
    days_left -= 1

Output:

5 days until Harsha's vacation
4 days until Harsha's vacation
3 days until Harsha's vacation
2 days until Harsha's vacation
1 day until Harsha's vacation

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