scantron.py

import os

#
# PARSE STUDENT ANSWERS FROM FILE
#

# choose the right file (must be in the same directory as this script!)
filename = os.path.join(os.path.dirname(__file__), 'student_answers.csv')
print(filename)

# read the file contents into memory
infile = open(filename, 'r')
student_answers = infile.readlines()
infile.close()

# clean the list by stripping line-breaks
index = 0
while index < len(student_answers):
    student_answers[index] = student_answers[index].rstrip('\n')
    index += 1

print(student_answers)

#
# COMPARE STUDENT ANSWERS WITH CORRECT ANSWERS
#

answer_key = [
  "A","C","A","A","D",
  "B","C","A","C","B",
  "A","C","D","A","D",
  "C","B","B","D","A"
]

correct_answers = []
incorrect_answers = []

for index, student_answer in enumerate(student_answers):
    correct_answer = answer_key[index] # we assume the student answer file is in the same order as the answer key
    student_answer_is_correct = (student_answer == correct_answer)
    question_number = index + 1
    if (student_answer_is_correct):
        correct_answers.append(question_number)
    else:
        incorrect_answers.append(question_number)
    print("ON QUESTION NUMBER " + str(question_number) + ", STUDENT CHOSE: " + student_answer + " AND CORRECT ANSWER IS: " + correct_answer + ". STUDENT IS CORRECT?: " + str(student_answer_is_correct))

#
# DISPLAY RESULTS
#

print("STUDENT CHOSE " + str( len(correct_answers) ) + " CORRECT ANSWERS: " + str(correct_answers))
print("STUDENT CHOSE " + str( len(incorrect_answers) ) + " INCORRECT ANSWERS: " + str(incorrect_answers))

student_passed = (len(correct_answers) >= 15)
print("STUDENT PASSED?: " + str(student_passed))

student_answers.csv

A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A
A

--->> python scantron.py 
student_answers.csv
['A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A', 'A']
ON QUESTION NUMBER 1, STUDENT CHOSE: A AND CORRECT ANSWER IS: A. STUDENT IS CORRECT?: True
ON QUESTION NUMBER 2, STUDENT CHOSE: A AND CORRECT ANSWER IS: C. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 3, STUDENT CHOSE: A AND CORRECT ANSWER IS: A. STUDENT IS CORRECT?: True
ON QUESTION NUMBER 4, STUDENT CHOSE: A AND CORRECT ANSWER IS: A. STUDENT IS CORRECT?: True
ON QUESTION NUMBER 5, STUDENT CHOSE: A AND CORRECT ANSWER IS: D. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 6, STUDENT CHOSE: A AND CORRECT ANSWER IS: B. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 7, STUDENT CHOSE: A AND CORRECT ANSWER IS: C. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 8, STUDENT CHOSE: A AND CORRECT ANSWER IS: A. STUDENT IS CORRECT?: True
ON QUESTION NUMBER 9, STUDENT CHOSE: A AND CORRECT ANSWER IS: C. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 10, STUDENT CHOSE: A AND CORRECT ANSWER IS: B. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 11, STUDENT CHOSE: A AND CORRECT ANSWER IS: A. STUDENT IS CORRECT?: True
ON QUESTION NUMBER 12, STUDENT CHOSE: A AND CORRECT ANSWER IS: C. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 13, STUDENT CHOSE: A AND CORRECT ANSWER IS: D. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 14, STUDENT CHOSE: A AND CORRECT ANSWER IS: A. STUDENT IS CORRECT?: True
ON QUESTION NUMBER 15, STUDENT CHOSE: A AND CORRECT ANSWER IS: D. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 16, STUDENT CHOSE: A AND CORRECT ANSWER IS: C. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 17, STUDENT CHOSE: A AND CORRECT ANSWER IS: B. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 18, STUDENT CHOSE: A AND CORRECT ANSWER IS: B. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 19, STUDENT CHOSE: A AND CORRECT ANSWER IS: D. STUDENT IS CORRECT?: False
ON QUESTION NUMBER 20, STUDENT CHOSE: A AND CORRECT ANSWER IS: A. STUDENT IS CORRECT?: True
STUDENT CHOSE 7 CORRECT ANSWERS: [1, 3, 4, 8, 11, 14, 20]
STUDENT CHOSE 13 INCORRECT ANSWERS: [2, 5, 6, 7, 9, 10, 12, 13, 15, 16, 17, 18, 19]
STUDENT PASSED?: False