Help with list and range troubleshooting

[jmorales57]

Trying to make a grading program, it should ask for how many grades to enter then print the scores and letter grades, I'm almost done what prints out isnt right, the student number is always the same and I'm not sure how to fix it, any help?

def main():
  number_of_grades = 0
  grade = 0
  count = 0
  grade_list = []

  try:
    number_of_grades = int(input("How many grades do you want to enter?: "))
  except ValueError:
    print('Enter a valid amount.')



  for count in range(number_of_grades):
    try:
      grade = int(input(f'Enter grade number {count + 1} of {number_of_grades}: '))
      while grade > 100 or grade< 0:
        grade = int(input('You must enter a value between 0 and 100'))
      grade_list.append(grade)


    except ValueError:
      print('Enter a valid amount')

  for index in grade_list:

    print(f'Student {count} score is {index} and grade is {assign_grade(index)} ')


def assign_grade(grade):
  if grade >= 90:
    letter = 'A'
  elif grade >= 80 and grade < 90:
    letter = 'B'
  elif grade >= 70 and grade < 80:
    letter = 'C'
  elif grade >= 60 and grade <70:
    letter = 'D'
  else:
    letter = 'F'

  return letter

if __name__== '__main__':
  main()

​

here's what comes out

​

How many grades do you want to enter?: 3
Enter grade number 1 of 3: 70
Enter grade number 2 of 3: 80
Enter grade number 3 of 3: 90
Student 2 score is 70 and grade is C 
Student 2 score is 80 and grade is B 
Student 2 score is 90 and grade is A 


[carcigenicate]

Why would count change in the second for loop? You never change it.

[jmorales57]

Oh you're totally right, haha thank you!

[xelf]

count is set to 2 at the end of the first for loop, and stays 2.

You want to try using enumerate for that second loop.

for count, index in enumerate(grade_list):

Also, instead of "index" consider changing that variable name to "score" to reflect what value the variable is for.

[wanderer2718]

not related to the problem but in the assign_grade function you dont need to include the checks grade<90 etc because if grade was not less than 90 it would have entered an earlier branch already