Question

• Write a function, grade(score), which is given score, and it returns a letter grade — the grade for that mark — according to this scheme:
  • A: >= 90
  • B: [80, 90)
  • C: [70, 80)
  • D: [60, 70)
  • F: < 60
• The square and round brackets denote closed and open intervals. A closed interval includes the number, and an open interval excludes it. So 79.99999 gets grade C, but 80 gets grade B.
• Define the main function as follows:
  • In main, your function, grade, should be called. Use a list of scores, [87, 92, 100, 54, 72, 84, 81, 74]. The list should be used for iterating a for loop (i.e. for i in scores:). Using the return value of the grade function, print the letter grade for each score.
• You have to make sure your main() function in your_lastname_17_1.py should not be called (i.e. run) when your_lastname_17_1 is imported from other Python files.
• Output
  • 87 has a letter grade, B
    92 has a letter grade, A
    100 has a letter grade, A
    54 has a letter grade, F
    72 has a letter grade, C
    84 has a letter grade, B
    81 has a letter grade, B
    74 has a letter grade, C

Answer 1

Source Code:

def grade(score):
grade=''
if(score>=90):
grade='A'
elif(score>=80 and score<90):
grade='B'
elif(score>=70 and score<80):
grade='C'
elif(score>=60 and score<70):
grade='D'
elif(score<60):
grade='E'

return grade

scores=[87,92,100,54,72,84,81,74]
for i in scores:
print(i,"has a letter grade")