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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.
30 sty 2013 · The condition that causes a while loop to stop iterating should always be clear from the while loop line of code itself without having to look elsewhere. Phil has the "correct" solution, as it has a clear end condition right there in the while loop statement itself.
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.
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.
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.
Loops in Python V22.0002-001 Summary • Loops provide a way to repeat blocks of instructions • While loops are the most general –They require a condition for exiting the loop •If the condition is never true, the loop is endless • For loops provide a simple way of repeating a block –once for each element in a sequence
for Loops • A for statement is one way to create a loop in Python. • allows us to repeat statements a specific number of times • Example: for i in [1, 2, 3]: print('Warning') print(i) will output: Warning 1 Warning 2 Warning 3 • The repeated statement(s) are known as the body of the loop. • must be indented the same amount in Python ...
