Choose a project: a program that keeps the scores of a quiz game and shows who is winning.

Plan. Follow the first four steps of the eight.

1. Goal. A program that keeps the scores of the players of a quiz and shows who is winning.
2. Jobs.
   • add_points(scores, name, points): add points to a player (a new player starts at 0),
   • leader(scores): the name of the player with the most points,
   • ranking(scores): the players from the most points to the least.
3. Data. A dictionary of name and score, because we look up and update by name. The ranking uses a list of tuples (name, score), made by sorted.
4. A small example, worked out by hand. Start with an empty dictionary.
   • Asha gets 10, Ravi gets 5, Asha gets 5, Meera gets 12.
   • The scores are Asha 15, Ravi 5, Meera 12.
   • The leader is Asha (15).
   • The ranking is Asha 15, Meera 12, Ravi 5.
   • The edges to test later: no players (no leader), a tie for the lead, a player with 0 points.