from random import randint

def parse_line(prob_info):
    list1 = prob_info.strip("<>").split("> <")
    return list1

def read_file(file_name):
    list_of_probs = []
    prob_info = open(file_name, 'r')
    problems = prob_info.read().splitlines()
    for line in problems:
        question = parse_line(line)
        list_of_probs.append(question)
    return list_of_probs

def incorrect_feedback(list_of_msg):
    pos = randint(0, len(list_of_msg) - 1)
    return list_of_msg[pos]

def test_student(incorrect_msg_list, max_attempts, prob_spec, prob_sol):
    attempts = 0
    while attempts < max_attempts:
        print prob_spec
        user_answer = raw_input('What is your answer? ').strip()
        if user_answer == prob_sol:
            print "You got it right!"
            return True
        else:
            print incorrect_feedback(incorrect_msg_list)
            attempts += 1
            print attempts
            print max_attempts
    print "You're all out of attempts!"
    return False

your_name = raw_input('What is your name? ')
print 'Welcome ' + your_name + ' to the math cognition tutor. You will practice some standard problems.'
max_attempts = int(raw_input('How many attempts do you want to give yourself per question? '))
file_name = raw_input('What is the name of the file containing your practice problems: ')
incorrect_msg = ["Try again!", "Hmm - not quite", "Oops - a typo maybe?"]
numpassed = 0

list_of_probs = read_file(file_name)
print list_of_probs
for problem in list_of_probs:
    test_student(incorrect_msg, max_attempts, problem[0], problem[1])
    if test_student == True:
        numpassed += 1
print "You got " + str(numpassed) + " questions right!"