Letter Grades for the Class — medium Python for AI problem | Incognition

Letter Grades for the Class

10 pts · 10 coins

Python for AIMedium

Letter Grades for the Class

A teacher has a dictionary of student → score and wants a dictionary of student → letter grade.

Write two functions:

letter_for(score) returns the letter for one score:

Score	Letter
90 or more	`"A"`
75 to 89	`"B"`
50 to 74	`"C"`
below 50	`"F"`

grade_book(scores) returns a new dictionary with the same students, each mapped to their letter. An empty dictionary gives back an empty dictionary.

Examples

scores = {"Ada": 95, "Ben": 60}

returns {'Ada': 'A', 'Ben': 'C'}

score = 75

returns 'B'

Hints

solution.py

1def letter_for(score):
2    # your code here
3    pass
4
5
6def grade_book(scores):
7    # your code here
8    pass
9