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Python Dates and Times in Python (2014) Let's Build a Timed Quiz App The Quiz Class

This is not working

When I run it I get this

treehouse:~/workspace$ python                                                           
Python 3.6.4 (default, Nov 19 2019, 17:12:46)                                           
[GCC 5.4.0 20160609] on linux                                                           
Type "help", "copyright", "credits" or "license" for more information.                  
>>> from quiz import Quiz                                                               
>>> quiz1 = Quiz()                                                                      
>>> quiz1.answers                                                                       
[]                                                                                      
>>> quiz1.questions                                                                     
[<class 'questions.Multiply'>, <class 'questions.Add'>, <class 'questions.Add'>, <class 
'questions.Add'>, <class 'questions.Multiply'>, <class 'questions.Add'>, <class 'questio
ns.Multiply'>, <class 'questions.Add'>, <class 'questions.Multiply'>, <class 'questions.
Multiply'>]                                                                             
>>> quiz1.questions[0].text                                                             
>>>

As you can see it gives back nothing. Here is my code

import datetime
import random

from questions import Add, Multiply


class Quiz:
    questions = []
    answers = []

    def __init__(self):
        question_types = [Add, Multiply]
        for _ in range(10):
            num1 = random.randint(1, 10)
            num2 = random.randint(1, 10)
            question = random.choice(question_types)
            self.questions.append(question)


    def take_quiz(self):
        # log the start time
        pass
        # ask all of the questions
        # log if they got the question right
        # log the end time
        # show a summary


    def total_correct(self):
        total = 0
        for answer in self.answers:
            if answer[0] == True:
                total += 1


    def ask(self, question):

        # log the start time
        # capture the answer
        # check the answer
        # log the end time
        # if the answer's right, send back True
        # otherwise, send back False
        # send back the elapsed time, too
        pass
    def summary(self):
        print(f"You got {self.total_correct()}/{self.questions}")
        print(f"It took you a total of {(self.end_time.start_time)} seconds")

4 Answers

You aren't sending any arguments to your randomly selected Add and Multiply classes in the following line:

question = random.choice(question_types)

Depending on which class stored in question_types is randomly selected during the loop's iteration, you are currently creating the question variable as one of the following: question = Add question = Multipy

Both of these classes are missing two arguments. It looks like you may be assigning the class itself to the question variable instead of creating an instance of the class to assign to question.

You should pass two numbers in order to instantiate the class. In the context of this for loop, pass the two random numbers between 1 and 10 assigned earlier in the loop to num1 and num2:

question = random.choice(question_types)(num1, num2)

Depending on which class stored in question_types is randomly selected and depending on which two random numbers between 1 and 10 are selected for num1 and num2, your assignment to the question variable might look something like the following during one of the loop's iterations:

question = Add(5, 7)

Josh Keenan
Josh Keenan
20,315 Points

You don't need any .text at the end.

When I did that this happened

treehouse:~/workspace$ python                                                                    
Python 3.6.4 (default, Nov 19 2019, 17:12:46)                                                    
[GCC 5.4.0 20160609] on linux                                                                    
Type "help", "copyright", "credits" or "license" for more information.                           
>>> from quiz import Quiz                                                                        
>>> quiz1 = Quiz()                                                                               
>>> quiz1.answers                                                                                
[]                                                                                               
>>> quiz1.questions                                                                              
[<class 'questions.Multiply'>, <class 'questions.Add'>, <class 'questions.Multiply'>, <class 'que
stions.Multiply'>, <class 'questions.Add'>, <class 'questions.Add'>, <class 'questions.Multiply'>
, <class 'questions.Multiply'>, <class 'questions.Add'>, <class 'questions.Multiply'>]           
>>> quiz1.questions[0]                                                                           
<class 'questions.Multiply'>            
Josh Keenan
Josh Keenan
20,315 Points

Print it out, if it doesn't come out how you want you should write the __str__ for your class so it is output correctly.

It's still not working