The while statement

The while statement in Python is a loop statement that allows you to execute a block of code repeatedly while a certain condition is true. The syntax of the while statement is as follows:

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while condition:

# code to be executed while the condition is true

The while loop will continue to execute the code inside the block as long as the condition is true. If the condition becomes false, the loop will terminate and the program will continue to the next statement after the loop.

It is important to make sure that the condition will eventually become false, otherwise, the loop will continue to run indefinitely, which can cause the program to hang or crash.

Here is an example of using the while statement to print out the numbers from 1 to 5:

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i = 1

while i <= 5:

print(i)

i += 1

This will output:

1

2

3

4

5

It is also possible to use the break and continue statements inside a while loop to break out of the loop or skip certain iterations based on certain conditions. For example:

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i = 1

while i <= 10:

if i == 5:

break

if i % 2 == 0:

i += 1

continue

print(i)

i += 1

This will output:

1