10. While loop made easy : Control Structures in python смотреть онлайн

In Python, a while loop is a control flow statement that repeatedly executes a block of code as long as a specified condition is true. The basic syntax of a while loop in Python is:

while condition:
# Code to be executed while the condition is true
Here, condition is a boolean expression that is evaluated before each iteration of the loop. The loop continues to execute the code inside the loop body as long as the condition is True.

The while loop is useful when you want to iterate a block of code an unknown number of times, as long as a certain condition is true. For example, you can use a while loop to repeatedly ask a user for input until they enter a valid value.

It's important to note that while loops can potentially run forever if the condition is never False. This is known as an "infinite loop" and can cause your program to become unresponsive or crash. To prevent this, you can use a break statement to exit the loop when a certain condition is met.


while condition:
# Code to be executed while the condition is true
if some_condition:
break
In addition to the while loop, Python also provides other loop structures such as for loops, nested loops, and list comprehension loops. Each loop structure has its own use case and can be used to solve different problems.

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