Python While Loops

A while loop in Python repeatedly executes a block of code as long as the specified condition is true.

1. Basic While Loop

The basic syntax of a while loop is:

while condition:
    # code block

The code block inside the loop will continue to execute as long as the condition remains true.

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

2. Infinite While Loop

If the condition in a while loop always evaluates to true, it will result in an infinite loop.

while True:
    print("This is an infinite loop")

3. Using Break Statement

The break statement can be used to exit the loop prematurely based on a certain condition.

i = 1
while True:
    print(i)
    if i == 5:
        break
    i += 1

4. Using Continue Statement

The continue statement can be used to skip the rest of the code inside the loop for the current iteration and proceed to the next iteration.

i = 0
while i < 5:
    i += 1
    if i == 3:
        continue
    print(i)

Conclusion

While loops are useful when you need to execute a block of code repeatedly based on a condition. However, you should be careful to avoid infinite loops and ensure that the loop eventually terminates.