Loops: Exercises and Solutions

Best-selling artists

Exercise

Do the following until the user enters quit:

Ask the name of an artist
Look up the number of sales of this artist in a dict
Print out the result if the number of sales are known
If the number of sales are unknown, ask the user to enter the number of sales, and update the dict accordingly

Solution

sales = {}
while True:
  artist = input('Enter an artist name: ')
  if artist == 'quit':
    break
  if artist in sales:
    print('{0} has sold {1} records'.format(artist, sales[artist]))
    continue
  sold = input('Enter sales: ')
  sales[artist] = sold

Output:

Enter an artist name: Michael Jackson
Enter sales: 350000000
Enter an artist name: Michael Jackson
Michael Jackson has sold 350000000 records
Enter an artist name: quit

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