Quizzing App DATA533

This is the repo for step 1. We were acdentially creating some branches for step 2 in this repo, please ignore them. Step 2 will be held in a seperate repo.

This is the repo for DATA 533 Project Group 3

Group 3 Mebmers: Jingtao Yang, Yiran Wang, Zihao Zhao

Our project is designed to be a Quizzing App that supports the full lifecycle of quiz creation, user management, quiz execution, scoring, and visualization.

The key features are:

1. Question Creation & Management - supports multiple question types (MCQ, TF, SA) and includes functions to store, modify, and organize questions.
2. User (Quiz-Taker) Profile - support regular/prenium users, for creation/management of user profiles and manage past quiz scores
3. Quiz Session Excution - generate custimized quizzes with certain types of questions, manage question flow and get answer from quiz-takers
4. Quiz Scoring and Result Visulization - Compare answers from the quiz-taker and get the scores, create visualization of the result

The core app components are divided into 3 subpackages, and each of the subpackages has two or three modules for achieving the functions.

General Structure

QuizzingApp/
│
├── README.md
├── .gitignore
│
├── data/                   # all storage JSON files
│   ├── questions.json
│   ├── users.json
│   └── sessions.json
│
├── docs/
│   ├── project description.pdf  # task 2 
│
├── quizzingapp/
│   ├── __init__.py
│   |
│   ├── questionbase/        # Sub-Package 1
│   │   ├── __init__.py
│   │   ├── questions.py
│   │   └── manage_question.py
│   |
│   ├── userprofile/         # Sub-Package 2
│   │   ├── __init__.py
│   │   ├── user.py
│   │   └── manage_user.py
│   |
│   └── quizsession/         # Sub-Package 3
│       ├── __init__.py
│       ├── session.py
│       └── result.py
│
├── tests/                   # unit tests   
│
└── examples/               

Features

Sub-package 1: userprofile/

user.py

• __init__(self, user_id, name, age, email, grades=None, profile_level="regular") Initializes a basic User object.

• setUserInfo(self, name=None, age=None, email=None) Updates personal information. Only fields passed as non-None values will be updated.

• getUserInfo(self) Returns a dictionary containing full user profile information.

• user_id, name, age, email, grades (list of numbers), profile_level (regular / premium) Used when exporting profile data or showing user details.

• addScore(self, score) Adds a new quiz score to the user’s grade list.

• getAvg(self) Returns the user’s average score across all recorded quizzes. If the user has no grades yet, returns 0.0.

• toDict(self) Converts the user’s information into a dictionary for JSON saving.

• Class: RegularUser(User) __init__(self, user_id, name, age, email, grades=None Initializes a RegularUser object. profile_level = "regular" Automatically sets in this.

• Class: PremiumUser(User)``__init__(self, user_id, name, age, email, grades=None) Initializes a PremiumUser object. profile_level = "premium" Automatically sets in this.

manage_user.py

• createUser(user_type, user_id, name, age, email, grades=None) Creates a new user object based on the given user type.

• user_type == "regular" creates a RegularUser

• user_type == "premium" creates a PremiumUser

• deleteUser(user_id) Deletes a user from internal memory if its ID exists.

• True If deletion succeeds

• False If user does not exist

• getUser(user_id) Returns the user object with the matching ID.

• None If not found

• getAllUsers() Returns a list of all user objects currently stored in memory.

• deleteAllUsers() Clears all users from memory by resetting the global _users dictionary.

• toJson(filepath=USERS_JSON) Saves all current users to a JSON file located at filepath.

• getJson(filepath=USERS_JSON) Loads user data from a JSON file and rebuilds the correct objects.

• registerUser(filepath=USERS_JSON) Interactive console-based user registration process.

Sub-package 2: questionbase/

question.py

Class: Question

• __init__(self, qid, qtext, qanswer, qtopic, qdifficulty, qtype) Initializes a basic question object.

• setText(self, new_text) Updates the text/content of the question.

• setAnswer(self, new_answer) Changes the correct answer stored for the question.

• setTopic(self, new_topic) Updates the topic/category of the question.

• setType(self, new_type) Updates the question type (MCQ to SA).

• getText(self) Returns the question text.

• getAnswer(self) Returns the correct answer.

• getTopic(self) Returns the topic/category.

• getType(self) Returns the question type.

• display(self) Returns a formatted string representing: question ID, question text, topic, difficulty, type. Used for printing/previewing questions in console.

• checkAnswer(self, user_input) Checks whether the user’s input matches the correct answer.

• toDict(self) Converts the object into a dictionary for JSON saving.

• Class: MCQuestion(Question) Inherits from Question. Represents a multiple-choice question.

• Class: TFQuestion(Question) Inherits from Question. Represents a True/False question.

• Class: SAQuestion(Question) Inherits from Question. Represents a short-answer question.

Question_manager.py

Class: QuestionManager

This class is responsible for loading, storing, filtering, adding, and saving questions. It acts as the controller between question objects and JSON storage.

• __init__(self) Initializes an empty list: self.questions = []. This list will store question objects (Question, MCQuestion, TFQuestion, or SAQuestion).

• addQuestion(self, question_obj) Adds a question object into the internal list.

• deleteQuestion(self, qid) Removes the question with a matching question ID. Implementation uses list comprehension: self.questions = [q for q in self.questions if q.qid != qid] If the ID does not exist, nothing happens.

• getAllQuestions(self) Returns the full list of question objects currently stored in memory.Often used when: Admin wants to display all questions, and quiz system needs the pool to randomly pick questions

• filterQuestions(self, qtype) Returns only the questions whose q.qtype == qtype.

• toJson(self, filepath) Saves all current question objects to a JSON file.

• getJson(self, filepath) Loads questions from a JSON file and rebuilds the correct Python objects.

Sub-package 3: quizsession/

session.py

• loadAllQuestions(json_file_path) Loads all questions from the questions.json file. Returns a list of question dictionaries.

• loadUsers(json_file_path) Loads all users from the users.json file

• selectUser(users) Prompts user to login by entering their name

• showQuestions(questions) Displays a list of question IDs and titles for preview purposes.

• pickQuestions(all_questions, num_questions) Randomly selects a specified number of questions by type

• createSession(user_id, user_name, num_questions, question_ids) Creates and returns a new QuizSession instance.

Class: QuizSession

• __init__(user_id, user_name, num_questions, question_ids) Initializes a quiz session with user information and selected question IDs. Generates a unique session_id using UUID.

• startSession() Records the start time and displays a welcome message to the user.

• askQuestions(all_questions) Displays each question interactively and collects user answers. Appends each answer as a tuple.

• getCurrentQuestion() Returns the current question object based on current_index.

• nextQuestion() Advances to and returns the next question.

• submitAnswer(answer) Records the user's answer for the current question and increments the index.

• endSession() Records the end time, sets isFinished to True, and displays a completion message.

• culculateTime() Calculates and returns the total time spent on the quiz in seconds.

• toDict() Converts session data to a dictionary format for serialization and result analysis.

result.py

Class: QuizResult

• __init__(session_dict, all_questions) Initializes result analysis from completed session data. Extracts session info and matches questions with user answers. Calls _analyze_answers() to process results.

• _analyze_answers() Internal method that compares each user answer with the correct answer and builds a results list containing question details, user answer, correct answer, correctness status, and question type.

• compareAnswer(question, answer) Checks if the user's answer matches the correct answer. Performs case-insensitive string comparison for text answers.

• countCorrect() Returns the number of correct answers.

• countWrong() Returns the number of incorrect answers.

• getScore() Returns the score (same as countCorrect).

• percentage() Calculates and returns the percentage score rounded to 2 decimal places.

• typeChart() Premium Feature - Displays a pie chart showing the distribution of question types attempted in the quiz.

• typeCorrectBar() Premium Feature - Displays a bar chart comparing correct vs incorrect answers for each question type.

• toDict() Converts result data to a dictionary format for saving.

• toJSON() Converts result data to a formatted JSON string.

• saveResult(filepath) Saves the quiz result to the sessions.json file

Data Storage

All data is stored in JSON format in the data/ directory:

• users.json: User profiles
• questions.json: All quiz questions
• sessions.json: Quiz results

Installation

1. Clone the repository:

   git clone https://github.com/andrewyang0620/Quizzing_App_DATA533.git
   cd Quizzing_App_DATA533

2. Install required packages:

   pip install matplotlib numpy

How to Use

Running the Application

Run the main application in your terminal:

python src/main.py

The application will display an interactive menu system. Simply follow the on-screen instructions:

1. Main Menu: Choose between User or Admin mode, or quit

   • Enter 1 for User functions
   • Enter 2 for Admin functions
   • Enter q to quit

2. Follow the prompts: The application will guide you through each step

   • Select options by entering the corresponding number
   • Enter q at any menu to return to the previous screen

3. User Mode:

   • Register a new user profile
   • Create a quiz session and participate in it.

4. Admin Mode:

   • Add new questions
   • View all existing questions
   • Delete all questions
   • View all users
   • Delete all users