Repetition Structures in Python

Flashcards based on the lecture notes covering repetition structures, including while loops, for loops, input validation, and nested loops in Python.

What is a repetition structure in programming?

A construct that allows the computer to repeat included code as necessary, which includes condition-controlled loops and count-controlled loops.

What is a while loop?

A condition-controlled loop that executes as long as a given condition is true.

What is iteration in the context of a loop?

One execution of the body of a loop.

What is an infinite loop?

A loop that does not have a way of stopping and repeats until the program is interrupted.

What does a count-controlled loop do?

It iterates a specific number of times, typically utilizing a for statement.

What is the role of the target variable in a for loop?

It references each item in a sequence as the loop iterates.

What does the range function do in a for loop?

It returns an iterable object that contains a sequence of values for the loop to iterate over.

What is a sentinel in programming?

A special value that marks the end of a sequence of items, allowing the loop to terminate.

What is input validation in loops?

The process of inspecting input before it is processed to ensure it is valid; typically done using a while loop.

What are nested loops?

Loops that are contained inside another loop, where the inner loop completes all its iterations for each iteration of the outer loop.