This program will have three functions, the main() create() and retrieve(). main() will call create() and then call retrieve() create() will prompt the user to enter any number of course name / grade pairs and write them to a file named grades.txt. Pressing Enter with no input value on the course name will exit the loop, close the file, print "File was created and closed" and return the bool value True to the main() retrieve()  will open and read grades.txt. The function then will print the course names and scores as shown below. The average score should be calculated as well as a simple GPA and displayed  to two decimal places and then return variable used for the GPA to the main() . See sample run below in which 4 course names were entered, but note that more or fewer courses could have been entered.

This program will have three functions, the main() create() and retrieve().

main() will call create() and then call retrieve()

create() will prompt the user to enter any number of course name / grade pairs and write them to a file named grades.txt. Pressing Enter with no input value on the course name will exit the loop, close the file, print "File was created and closed" and return the bool value True to the main()

retrieve()  will open and read grades.txt. The function then will print the course names and scores as shown below. The average score should be calculated as well as a simple GPA and displayed  to two decimal places and then return variable used for the GPA to the main() . See sample run below in which 4 course names were entered, but note that more or fewer courses could have been entered.

I need my grades.txt file to output course and grade in seperate lines (which I think I fixed) and work for the final output (not fixed). I am getting errors. I am not sure how to adjust my code.  I attached a good example... Mine is not working,  (attached example)

The expected output for the program is also attached.  

Thank you for helping. 

Here is my current code in Python

#Defining the function create()

def create():

#open the file

grades_file = open('grades.txt','w')

while True:

course_name = input("Enter course name or Enter to quit: ")

#Storing the values

if course_name == '':

print("File was created and closed")

break

grade = int(input("Enter grade (integer) achieved: "))

line = course_name+'\n'+str(grade)+'\n'

grades_file.write(line)

#close the file

grades_file.close()

return True

#Defining the retrieve function

def retrieve():

#Printing statement

print("\nHere are your grades:")

#Initializing the variables

sum_of_grades = 0

count = 0

gpa=0

#open file

grades_file = open('grades.txt','r')

for line in grades_file:

course,grade = line.strip()

#finding sum

sum_of_grades+=int(grade)

#finding the grade

if(int(grade)>=90):

gpa+=4.0

elif(int(grade)>=80):

gpa+=3.0

elif(int(grade)>=70):

gpa+=2.0

elif(int(grade)>=60):

gpa+=1.0

else:

gpa+=0.0

#count how many grades are in total

count+=1

gpa_cal = gpa/count

print("{} score is {}".format(course,grade))

#find the average grade

avg = sum_of_grades/count

print("Average grade among your courses is {:.2f}".format(avg),"Your GPA is {:.2f}".format(gpa_cal))

return avg

#Defining the main()

def main():

#Calling the methods

create()

GPA = retrieve()

main()