Create a list of objects python

Question

I'm trying to create a quiz, and there is a Syntax error in the questions array for the 2nd element. I've tried appending each object to the array through a `for loop but I need each question to have a correct answer.

The Questions class is in a diffrent file:

class Questions:
    def __init__(self, prompt, answer):
        self.prompt = prompt
        self.answer = answer

Here is the main file:

from Questions import Questions
questionsPrompt = ["What does CPU stand for?\n(a) central procesing unit\n(b)controlled purification\n(c)computer unit",
    "What is an advantage of a compiler?\n(a)slow to run each time\n(b)compiling takes a long time\n(c)easy to implement",
    "The Operating System is a :\n(a)system software\n(b)application software\n(c)utility software"]

questions = [
    Questions(questionsPrompt[0], "a")
    Questions(questionsPrompt[1], "b")
    Questions(questionsPrompt[2], "a")
]

def runQuiz(questions):
    score = 0
    for question in questions:
        answer = input(question.prompt)
        if answer == question.answer:
            score += 1
    return score

runQuiz(questions)

Then do it using a loop and a list of correct answers or a dict — gogaz
– gogaz, Commented Aug 22, 2018 at 17:12

Marianne Linhares · Accepted Answer · 2018-08-22 17:14:13Z

2

As Aran-Fey commented, list items must be separated by commas. This is also true for other collections as dictionaries, sets, etc.

questions = [
    Questions(questionsPrompt[0], "a"),
    Questions(questionsPrompt[1], "b"),
    Questions(questionsPrompt[2], "a")
]

answered Aug 22, 2018 at 17:14

Marianne Linhares

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Comments

Tyler Nivin · Accepted Answer · 2018-08-22 17:13:50Z

1

As Aran-Fey pointed out, your syntax is incorrect.

questions = [
    Questions(questionsPrompt[0], "a"),
    Questions(questionsPrompt[1], "b"),
    Questions(questionsPrompt[2], "a")
]

Also, another small point, what you are creating is a list, not an array. There are both semantic and implementation differences, and since Python has both, it's an important distinction.

answered Aug 22, 2018 at 17:13

Tyler Nivin

112 bronze badges

2 Comments

Irina Maria Over a year ago

such a silly mistake i made. what is the diffrence between an array and list?

Tyler Nivin Over a year ago

A very short summary can be found on the python docs website at docs.python.org/3/library/array.html "This module defines an object type which can compactly represent an array of basic values: characters, integers, floating point numbers. Arrays are sequence types and behave very much like lists, except that the type of objects stored in them is constrained." Whereas, lists can contain any object, and have a different set of methods. look here: docs.python.org/3/library/stdtypes.html?highlight=lists#list

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