Why write the same thing 100 times when Python can do it for you? Loops are the engine of automation â and one of programming's most powerful ideas.
Repeat code while a condition stays true â countdowns, games, retries.
Iterate a fixed number of times with precise control over start, stop, and step.
Build running totals, counts, max/min tracking, and string construction.
Loops inside loops for grids, tables, and 2D patterns.
Fine-grained loop control â exit early or skip iterations.
Combine everything into a full number-guessing game with replay.
Watch how Python executes a loop step by step. Click a loop type to see it in action.
Click any lesson to see its challenges.
Repeat actions while a condition is true. Learn loop variables, avoid infinite loops, and use break for early exit.
Iterate a fixed number of times with for and range(). Master start, stop, and step parameters.
Master the accumulator, counter, and max/min patterns. Build strings and totals inside loops.
Put loops inside loops to build grids, tables, and 2D patterns. Understand inner vs. outer iteration.
Fine-tune loop behavior: exit early with break, skip iterations with continue, and discover for...else.
Build a full-featured guessing game: random number, hint system, attempt counter, play-again loop, and high-score tracking.
Lesson 3.1 introduces while â the loop that keeps going until you tell it to stop.