Python While Loop

Python while loop

Created By: chatGPT

In Python, a while loop is used to execute a block of code repeatedly as long as a condition is True. It's essential to ensure that the loop will eventually terminate to avoid creating an infinite loop. Here’s a basic structure of a while loop:

while condition:
    # Code to execute

Here’s an example that uses a while loop to count from 1 to 5:

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

In this example, the loop continues as long as count is less than or equal to 5. After each iteration, we increment the value of count by 1 using count += 1.

# Output:
# 1
# 2
# 3
# 4
# 5

To terminate a loop prematurely, you can use the break statement. Here’s an example that stops the loop if count equals 3:

count = 1
while count <= 5:
    if count == 3:
        break
    print(count)
    count += 1

This would output numbers 1 and 2, and then the loop is terminated when count reaches 3.

# Output:
# 1
# 2

If you want to skip the current iteration of the loop, you can use the continue statement. Here’s how you might skip the number 3:

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

In this scenario, when count is 3, the loop skips printing and continues to the next iteration. The output will include all numbers except 3.

# Output:
# 1
# 2
# 4
# 5