def __init__(self, num_questions=50, databases_to_use=None):
# set up the exam, what databases to include, how many questions to ask.
# then get those questions and add them to the question list. Initialize
# the answer list to false for every question. Also check that the user's
# number of questions is actually possible given the size of our databases
self.question_database = DatabaseAccessor(databases_to_use)
self.num_questions = num_questions
self.current_question_index = None
self.answer_list = list() # To keep track of what the user answered to each question
self.question_list = list() # A list of all the questions to ask the user.
for i in range(self.num_questions):
self.question_list.append(self.question_database.get_random_question())
self.answer_list.append(None)
class Exam():
def __init__(self, num_questions=50, databases_to_use=None):
# set up the exam, what databases to include, how many questions to ask.
# then get those questions and add them to the question list. Initialize
# the answer list to false for every question. Also check that the user's
# number of questions is actually possible given the size of our databases
self.question_database = DatabaseAccessor(databases_to_use)
self.num_questions = num_questions
self.current_question_index = None
self.answer_list = list() # To keep track of what the user answered to each question
self.question_list = list() # A list of all the questions to ask the user.
for i in range(self.num_questions):
self.question_list.append(self.question_database.get_random_question())
self.answer_list.append(None)
def next_question(self):
# Moves the index pointer to the next question. If we've reached the end of
# the question list then return False, otherwise return True
if self.current_question_index == None:
self.current_question_index = 0
else:
self.current_question_index += 1
if self.current_question_index <= self.num_questions - 1:
return True
else:
return False
def prev_question(self):
# Moves the index pointer to the previous question.
if self.current_question_index <= 0:
self.current_question_index = 0
else:
self.current_question_index -= 1
return True
return False
def answer_current_question(self, answer):
# Answers the current question, storing the result. Function
# returns a boolean indicating the result.
if self.question_list[self.current_question_index].check_answer(answer):
self.answer_list[self.current_question_index] = True
return True
else:
self.answer_list[self.current_question_index] = False
return False
def get_correct_answer(self):
# Returns the correct answer index, starting from 0
return self.question_list[self.current_question_index].get_correct_answer()
def get_current_question(self):
# Returns the current question object
return self.question_list[self.current_question_index]
def get_current_question_text(self):
question = self.get_current_question()
text_array = [question.get_question_text()]
answer_array = question.get_list_of_answers()
for text in answer_array:
text_array.append(text)
return text_array
def get_percent(self):
return float(self.get_num_correct()) / float(self.num_questions) * 100
def print_percent(self):
print "Result: {0}%".format(int(self.get_percent()))
def get_num_correct(self):
total_correct = 0
for x in self.answer_list:
if x == True:
total_correct += 1
return total_correct
def get_details(self):
return self.answer_list
def print_details(self):
# prints the details of the exam
for aindex in range(len(self.answer_list)):
print "Question {0} Result: {1}".format(aindex,
"Correct" if self.answer_list[aindex] == True else "Incorrect")
pass
def administer_exam(self):
# Administer the test to user, including input and output to the screen
while (self.next_question()):
print "Question Number {0}".format(self.current_question_index + 1)
print self.get_current_question()
answer_index = None
while 1:
userInput = raw_input("Answer: ")
try:
answer_index = int(userInput)
if answer_index < 1 or answer_index > 4:
print "Incorrect answer, try again"
answer_index = None
else:
break
except:
if userInput.lower() == 'exit':
print "Exiting Exam"
break
else:
print "That's not what an number looks like, try again"
if answer_index is not None:
if self.answer_current_question(answer_index):
print "Correct!\n"
else:
print "INCORRECT - Correct Answer is {0}\n".format(
self.get_current_question().get_correct_answer())
else:
break
self.print_percent()