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30 sty 2013 · break stops the while loop, but there isn't a 'False signal': while means 'loop while the expression following the while statement evaluates as True', so if what comes after while is True itself, while will loop forever; break means 'stop looping right now' and works any loop, including both while and for loops.
4 cze 2021 · While Loop. One way is to use a while loop. It is typical to use a while loop if you don’t know exactly how many times the loop should execute. General form: while condition: statement(s) Meaning: as long as the condition remains true, execute the statements.
In this tutorial, you'll learn about indefinite iteration using the Python while loop. You’ll be able to construct basic and complex while loops, interrupt loop execution with break and continue, use the else clause with a while loop, and deal with infinite loops.
Breaking Out of a Loop. The break statement ends the current loop and jumps to the statement immediately following the loop. It is like a loop test that can happen anywhere in the body of the loop. while True: line = raw_input('> ') if line == 'done' : break print line. print 'Done!' > hello there. hello there. > finished.
18 kwi 2013 · One approach would be to have yn return a boolean value which then would be used to break out of the loop. Otherwise a break within a function cannot break out of a loop in the calling function.
You need to understand that the break statement in your example will exit the infinite loop you've created with while True. So when the break condition is True, the program will quit the infinite loop and continue to the next indented block.
The While Loop. This type of loop can be used if it’s not known in advance how many times that the loop will repeat (most powerful type of loop, any other type of loop can be simulated with a while loop). It can repeat so long as some arbitrary condition holds true. while (Boolean expression): body.
