2 - Loops and iteration

loop

repeat a block of code multiple times without writing it again

process multiple items

repeat same task

unknown repetitions

why are loops useful?

condition-controlled loop

count-controlled loop

types of repetition structure

condition-controlled loop (while)

loop continues as long as the condition remains true.

count-controlled loop (for)

repeats a specific number of times

while loop

repeatedly executes a target statement as long as a given condition is true

for loop

runs a block of code a specific number of times or goes through every item in a sequence eq. string

break

continue

pass

loop control statements

break

immediately ends the loop, even if the condition/range isn't finished

continue

skips the current step and moves to the next one

pass

does nothing; used as a placeholder when you don't want any action yet

choose the right loop type

avoid infinite loops

keep it simple

best practices for loops