help1.py

def main():
    myfile = open('grades.txt','w')
    course = input('Enter course or Enter to quit')

    while course != '':
        grade = int(input('Enter percent achieved'))
        myfile.write(course + ',')
        myfile.write(str(grade) + '\n')
        course = input('Enter course or Enter to quit')

    myfile.close()
    print('File was created')

main()