In Python, event-controlled loops are written using a while statement and are called while loop. A while statement tests for an initial condition, and the lines of code indented under while run only ...

So it’s possible that the body of any given while loop might never be executed. If, at the start, the while condition is false, Python will skip past the loop entirely! Input validation with while ...

Iteration and loops in Python (Elements of Computing I, University of Notre Dame) - python-loops-iteration/README.md at main · kwaldenphd/python-loops-iteration ...