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#! /usr/bin/python |
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# -*- coding: utf-8 -*- |
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""" |
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MusicQuizzer is a Python program that can help you prepare for any test that |
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involves listening to excerpts of music pieces and answering multiple choice |
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questions about them. For more information, see the included README.md. |
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""" |
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from __future__ import division |
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import ConfigParser as configparser |
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import os |
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from pygame import mixer, error |
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import random |
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import thread |
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import time |
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from Tkinter import * |
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from tkFont import Font |
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from urllib import urlretrieve |
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__author__ = "Ben Kurtovic" |
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__copyright__ = "Copyright (c) 2011 by Ben Kurtovic" |
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__license__ = "MIT License" |
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__version__ = "0.1" |
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__email__ = "ben.kurtovic@verizon.net" |
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config_filename = "config.cfg" |
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config = None |
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piece_dir = None |
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download_complete = False |
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master_width = 500 |
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master_height = 500 |
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question_height = 100 |
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class AnswerSheet(object): |
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def __init__(self, master): |
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self.master = master |
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self.order = generate_piece_order() |
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self.init_widgets() |
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self.generate_questions() |
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self.grid_questions() |
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def init_widgets(self): |
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self.scroll = Scrollbar(self.master) |
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self.scroll.grid(row=1, column=1, sticky=N+S) |
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self.canvas = Canvas(self.master, yscrollcommand=self.scroll.set, |
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width=master_width, height=master_height-30) |
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self.canvas.grid(row=1, column=0, sticky=N+S+E+W) |
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self.canvas.grid_propagate(0) |
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self.scroll.config(command=self.canvas.yview) |
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self.master.grid_rowconfigure(0, weight=1) |
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self.master.grid_columnconfigure(0, weight=1) |
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self.frame = Frame(self.canvas) |
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self.frame.rowconfigure(1, weight=1) |
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self.frame.columnconfigure(1, weight=1) |
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self.header = Frame(self.master, bd=2, relief="groove") |
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self.header.grid(row=0, column=0, columnspan=2) |
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self.header_buttons = Frame(self.header, width=250, height=30) |
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self.header_buttons.grid_propagate(0) |
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self.header_buttons.grid(row=0, column=0) |
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self.playing_container = Frame(self.header, width=master_width-240, height=30) |
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self.playing_container.grid_propagate(0) |
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self.playing_container.grid(row=0, column=1) |
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self.play_button = Button(self.header_buttons, text="Start Quiz", |
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command=self.play) |
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self.play_button.grid(row=0, column=0) |
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self.submit_button = Button(self.header_buttons, text="Submit Answers", |
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command=self.submit) |
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self.submit_button.grid(row=0, column=1) |
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self.playing = StringVar() |
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self.playing.set("Now Playing: None") |
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self.now_playing = Label(self.playing_container, textvar=self.playing) |
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self.now_playing.grid(row=0, column=0) |
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def generate_questions(self): |
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num_answers = config.getint("general", "answers") |
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answer_choices = {} # dict of {category1: {choice1, choice2...}, ...} |
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questions = {} # dict of {piece1: [question1, question2...], ...} |
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self.number_of_questions = 0 |
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for piece in self.order: |
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for category, answer_choice in config.items(piece): |
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if category == "url": |
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continue |
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try: |
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answer_choices[category].add(answer_choice) |
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except KeyError: |
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answer_choices[category] = set([answer_choice]) |
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for piece in self.order: |
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questions[piece] = dict() |
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for category in config.options(piece): |
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if category == "url": |
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continue |
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correct_choice = config.get(piece, category) |
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questions[piece][category] = [correct_choice] |
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all_choices = list(answer_choices[category]) |
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all_choices.remove(correct_choice) |
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for x in range(num_answers - 1): |
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try: |
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choice = random.choice(all_choices) |
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except IndexError: |
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break # if there aren't enough choices in the choice |
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# bank, there will be fewer answer choices than |
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# we want, but what else can we do? |
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all_choices.remove(choice) |
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questions[piece][category].append(choice) |
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question_choices = questions[piece][category] |
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questions[piece][category] = randomize_list(question_choices) |
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self.number_of_questions += 1 |
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self.questions = questions |
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def grid_questions(self): |
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self.answers = {} |
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self.stuff_to_disable = [] # what gets turned off when we press submit? |
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question_grid = Frame(self.frame) |
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this_row_number = 0 |
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excerpt = "A" |
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for piece in self.order: |
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question_row_number = 1 |
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piece_questions = self.questions[piece].keys() |
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piece_questions.reverse() # correct ordering issues |
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self.answers[piece] = {} |
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height = question_height * len(piece_questions) + 20 |
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piece_grid = Frame(question_grid, width=master_width, |
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height=height) |
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title = Label(piece_grid, text="Excerpt {0}".format(excerpt), |
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font=Font(family="Verdana", size=10, weight="bold")) |
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excerpt = chr(ord(excerpt) + 1) # increment excerpt by 1 letter |
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title.grid(row=0, column=0, columnspan=3) |
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for question in piece_questions: |
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agrid = LabelFrame(piece_grid, text=question.capitalize(), |
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width=master_width, height=question_height) |
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a = StringVar() |
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self.answers[piece][question] = a |
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w = (master_width / 2) - 4 |
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lhgrid = Frame(agrid, width=w, height=question_height) |
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rhgrid = Frame(agrid, width=w, height=question_height) |
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this_row = 0 |
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left_side = True |
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for choice in self.questions[piece][question]: |
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if left_side: |
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r = Radiobutton(lhgrid, text=choice, |
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value=choice, variable=a) |
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left_side = False |
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else: |
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r = Radiobutton(rhgrid, text=choice, |
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value=choice, variable=a) |
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left_side = True |
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this_row += 1 |
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r.grid(row=this_row, column=0, sticky=W) |
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self.stuff_to_disable.append(r) |
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lhgrid.grid_propagate(0) |
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lhgrid.grid(row=0, column=1) |
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rhgrid.grid_propagate(0) |
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rhgrid.grid(row=0, column=2) |
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agrid.grid_propagate(0) |
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agrid.grid(row=question_row_number, column=0) |
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question_row_number += 1 |
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piece_grid.grid_propagate(0) |
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piece_grid.grid(row=this_row_number, column=0) |
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this_row_number += 1 |
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question_grid.grid(row=0, column=0) |
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def play(self): |
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self.play_button.configure(state=DISABLED) |
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thread.start_new_thread(self.play_pieces, ()) |
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def play_pieces(self): |
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self.excerpt_length = (config.getfloat("general", "excerpt_length") - 5) * 1000 |
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break_length = config.getfloat("general", "break_length") |
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cur_excerpt = "A" |
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mixer.init() |
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for piece in self.order: |
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try: |
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self.playing.set("Now Playing: Excerpt {0}".format(cur_excerpt)) |
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before = time.time() |
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self.play_piece(piece) |
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after = time.time() |
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retries = 1 |
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while after - before < 3 or retries >= 100: # if the piece |
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before = time.time() # played for less than 3 seconds, |
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self.play_piece(piece) # assume something went wrong |
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after = time.time() # loading and try to replay it, |
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retries += 1 # but don't get stuck in a loop if |
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# we legitimately can't play it |
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self.playing.set("That was Excerpt {0}...".format(cur_excerpt)) |
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cur_excerpt = chr(ord(cur_excerpt) + 1) |
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time.sleep(break_length) |
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except error: # Someone quit our mixer? STOP EVERYTHING. |
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break |
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self.playing.set("Finished playing.") |
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def play_piece(self, piece): |
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mixer.music.load(os.path.join(piece_dir, piece)) |
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mixer.music.play() |
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fadeout_enabled = False |
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while mixer.music.get_busy(): |
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if mixer.music.get_pos() >= self.excerpt_length: |
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if not fadeout_enabled: |
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mixer.music.fadeout(5000) |
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fadeout_enabled = True |
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time.sleep(1) |
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def submit(self): |
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self.submit_button.configure(state=DISABLED) |
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self.play_button.configure(state=DISABLED) |
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for item in self.stuff_to_disable: |
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item.configure(state=DISABLED) |
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try: |
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mixer.quit() |
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except error: # pygame.error |
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pass # music was never played, so we can't stop it |
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right = 0 |
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wrong = [] |
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excerpt = "A" |
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for piece in self.order: |
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questions = self.questions[piece].keys() |
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questions.reverse() # correct question ordering |
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for question in questions: |
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correct_answer = config.get(piece, question) |
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given_answer = self.answers[piece][question].get() |
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if given_answer == u"Der Erlk\xf6nig": # unicode bugfix |
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given_answer = "Der Erlk\xc3\xb6nig" |
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if correct_answer == given_answer: |
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right += 1 |
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else: |
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wrong.append((excerpt, config.get(piece, "title"), |
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question, given_answer, correct_answer)) |
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excerpt = chr(ord(excerpt) + 1) |
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results = Toplevel() # make a new window to display results |
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results.title("Results") |
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noq = self.number_of_questions |
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text = "{0} of {1} answered correctly ({2}%):".format(right, noq, |
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round((right / noq) * 100, 2)) |
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if right == noq: |
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text += "\n\nCongratulations, you got everything right!" |
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else: |
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text += "\n" |
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for excerpt, title, question, given_answer, correct_answer in wrong: |
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if not given_answer: |
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if question == "title": |
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text += "\nYou left the title of Excerpt {0} blank; it's \"{1}\".".format( |
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excerpt, correct_answer) |
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else: |
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text += "\nYou left the {0} of \"{1}\" blank; it's {2}.".format( |
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question, title, correct_answer) |
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elif question == "title": |
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text += "\nExcerpt {0} was {1}, not {2}.".format( |
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excerpt, correct_answer, given_answer) |
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else: |
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text += "\nThe {0} of \"{1}\" is {2}, not {3}.".format( |
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question, title, correct_answer, given_answer) |
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label = Label(results, text=text, justify=LEFT, padx=15, pady=10, |
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font=Font(family="Verdana", size=8)) |
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label.pack() |
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def randomize_list(old): |
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new = [] |
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while old: |
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obj = random.choice(old) |
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new.append(obj) |
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old.remove(obj) |
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return new |
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def generate_piece_order(): |
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pieces = config.sections() |
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pieces.remove("general") # remove config section that is not a piece |
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return randomize_list(pieces) |
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def load_config(): |
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global config, piece_dir |
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config = configparser.SafeConfigParser() |
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config.read(config_filename) |
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if not config.has_section("general"): |
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exit("Your config file is missing or malformed.") |
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piece_dir = os.path.abspath(config.get("general", "piece_dir")) |
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def get_missing_pieces(root): |
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pieces = config.sections() |
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pieces.remove("general") |
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missing_pieces = [] |
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for piece in pieces: |
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if not os.path.exists(os.path.join(piece_dir, piece)): |
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missing_pieces.append(piece) |
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if missing_pieces: |
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window = Toplevel() |
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window.title("PyQuizzer") |
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window.protocol("WM_DELETE_WINDOW", root.destroy) |
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status = StringVar() |
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status.set("I'm missing {0} music ".format(len(missing_pieces)) + |
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"pieces;\nwould you like me to download them for you now?") |
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head_label = Label(window, text="Download Music Pieces", font=Font( |
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family="Verdana", size=10, weight="bold")) |
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head_label.grid(row=0, column=0, columnspan=2) |
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status_label = Label(window, textvar=status, justify=LEFT, padx=15, |
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pady=10) |
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status_label.grid(row=1, column=0, columnspan=2) |
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quit_button = Button(window, text="Quit", command=lambda: exit()) |
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quit_button.grid(row=2, column=0) |
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dl_button = Button(window, text="Download", |
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command=lambda: do_pieces_download(missing_pieces, status, |
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dl_button, status_label, window)) |
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dl_button.grid(row=2, column=1) |
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window.mainloop() |
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else: |
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global download_complete |
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download_complete = True |
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def do_pieces_download(pieces, status, dl_button, status_label, window): |
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global download_complete |
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dl_button.configure(state=DISABLED) |
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counter = 1 |
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for piece in pieces: |
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url = config.get("general", "base_url") + config.get(piece, "url") |
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name = "{0} of {1}: {2}".format(counter, len(pieces), |
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config.get(piece, "title")) |
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urlretrieve(url, os.path.join(piece_dir, piece), |
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lambda x, y, z: progress(x, y, z, name, status, status_label)) |
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counter += 1 |
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window.quit() |
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window.withdraw() |
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download_complete = True |
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def progress(count, block_size, total_size, name, status, label): |
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percent = int(count * block_size * 100 / total_size) |
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status.set("Downloading pieces...\n" + name + ": %2d%%" % percent) |
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label.update_idletasks() |
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def run(): |
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root = Tk() |
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root.withdraw() |
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load_config() |
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get_missing_pieces(root) |
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while not download_complete: |
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time.sleep(0.5) |
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window = Toplevel() |
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window.title("MusicQuizzer") |
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answer_sheet = AnswerSheet(window) |
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answer_sheet.canvas.create_window(0, 0, anchor=NW, |
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window=answer_sheet.frame) |
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answer_sheet.frame.update_idletasks() |
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answer_sheet.canvas.config(scrollregion=answer_sheet.canvas.bbox("all")) |
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window.protocol("WM_DELETE_WINDOW", root.destroy) # make the 'x' in the |
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# corner quit the entire program, not just this window |
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window.mainloop() |
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if __name__ == "__main__": |
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run() |
Ben Kurtovic
13 years ago