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Course: Intro to computer science - Python > Unit 3

Lesson 4: Loop control flow

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Trace compound while loops

Google Classroom

A music app runs a loop to play through songs in a playlist.

import player

songs_played = 0
playlist_length = player.get_playlist()
autoplay = "on"

while songs_played < playlist_length or autoplay == "on":
    player.play_next_song()
    songs_played = songs_played + 1
    autoplay = input("Autoplay? ")

How do the variables in the loop condition affect the number of iterations?

(Choice A)
If autoplay is turned off, the loop terminates.
(Choice B)
The loop repeats at least as many times as the length of the playlist.
(Choice C)
If the playlist is empty, the loop body never executes.
(Choice D)
If the autoplay setting stays on, the loop repeats forever.