Python 3.12 Beginner Tutorial - Lesson 12 - While
Lesson 12 - While
The "while" statement is a control flow structure used to create a loop that repeatedly executes a block of code as long as a specified condition remains true. The syntax includes the "while" keyword followed by a boolean expression. The indented code block beneath the "while" statement is executed iteratively until the condition evaluates to false. This construct is essential for scenarios where the number of iterations is not known in advance.
A "while-else" construct combines the "while" loop with an optional "else" block. The "else" block is executed when the "while" loop condition becomes False, signifying the end of the loop. This structure provides a way to specify actions to be taken after the successful completion of the "while" loop. If the loop exits normally (without encountering a "break" statement), the "else" block is executed. The "while-else" construct is useful for expressing actions to be taken upon the natural termination of the loop, offering a concise and readable way to handle post-loop events.
The "continue" statement is used within loops to skip the rest of the current iteration and proceed to the next one. When encountered, "continue" immediately jumps to the next iteration of the loop, bypassing any code below it within the loop block. This allows programmers to skip specific parts of the loop's body based on certain conditions, enhancing control over loop execution.
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