Multiple Choice Questions

#!/usr/bin/env python

import string
import random


class Question:

    def __init__( self, prompt = "", answers = [], \
                  correct_answer = None):

        self.prompt = prompt
        self.answers = answers

        self.correct_answer = correct_answer

        # If we are creating answers "in-line", use an index
        # to reference the correct answer
        if ( type(self.correct_answer) == type( int() ) ):
            self.correct_answer = self.answers[self.correct_answer]



class Answer:

    def __init__( self, text = "", point_value = 0 ):

        self.text = text
        self.point_value = point_value # expect it in 1...10



#------------------------------------------------


class Quiz:

    def __init__( self ):

        self.score = 0

    def tell_current_score( self ):

        print "Your current score is %d." % self.score

        print '='*30 # ==============================
        print ""



    def ask_a_question( self, question ):

        answered = False

        print question.prompt

        number_of_possible_answers = len(question.answers)

        for index, answer in enumerate(question.answers):
            print string.lowercase[index] +  ") ", answer.text

        while ( not answered ):
            their_answer = raw_input('> ')

            if (their_answer and their_answer in string.lowercase[:number_of_possible_answers]):

                index_of_answer = string.lowercase.index(their_answer)
                answer_they_give = question.answers[index_of_answer]

                # Optional feedback...
                if ( answer_they_give.point_value <= 5 ):
                    print "Bad answer!"
                else:
                    print "Good answer!"



                if ( answer_they_give == question.correct_answer ):

                    print "CORRECT! You got it right!"
                    print "Adding %d points to your score..." % question.correct_answer.point_value
                    self.score += question.correct_answer.point_value


                else:
                    print "INCORRECT! You got it wrong!"
                answered = True

            else:
                print "That is not a valid answer!"
                answered = False

    def ask_many_questions( self, questions ):

        for question in questions:
            self.ask_a_question( question )
            self.tell_current_score()

    def ask_random_sample_of_questions( self, questions, number ):

        random_sample_of_questions = []

        for i in range( number ):
            new_question = random.choice(questions)
            random_sample_of_questions.append(new_question)
            questions.remove(new_question)

        self.ask_many_questions(random_sample_of_questions)


    def run( self ):


        # -------------------------------

        # self.ask_many_questions(
        self.ask_random_sample_of_questions(
            [
                # List of question...

                Question( \
prompt = "The current Prime Minister of Canada is Pierre Elliot Trudeau.",
answers =       [
                    Answer("True", 0),
                    Answer("False", 10),
                    ],
correct_answer = 1 # so "False" is the correct answer in this case.
                ),

                # more questions....

                Question( \
prompt = "Who is the 45th president of the United States?",
answers =       [
                    Answer("George W. Bush", 3),
                    Answer("Barack Obama", 4),
                    Answer("Donald Trump", 10),
                    Answer("Abraham Lincon", 1),
                    ],
correct_answer = 2 # so "Donald Trump" is the correct answer in this case.
                ),


                Question( \
prompt = "The Toronto Maple Leafs have won 13 Stanley Cups.",
answers =       [
                    Answer("True", 10),
                    Answer("False", 0),
                    ],
correct_answer = 0 # so "True" is the correct answer in this case.
                ),



                Question( \
prompt = "What was the last year the Toronto Maple Leafs won the Stanley Cup?",
answers =       [
                    Answer("1957", 6),
                    Answer("1967", 10),
                    Answer("1969", 3),
                    Answer("2018", 1),
                    ],
correct_answer = 1 # so "1967" is the correct answer in this case.
                ),

                # ...

            ]
        , ) # only ask TWO random questions...


if ( __name__ == "__main__" ):

    quiz = Quiz()
    quiz.run()