Code for How to Make a YouTube Audio Downloader in Python Tutorial

from tkinter import * from tkinter import ttk from pytube import YouTube from tkinter.messagebox import showinfo, showerror, askokcancel import threading import os # the function for closing the application def close_window(): # if askokcancel is True, close the window if askokcancel(title='Close Application', message='Do you want to close MP3 downloader?'): # this distroys the window window.destroy() # the function to download the mp3 audio def download_audio(): # the try statement to excute the download the video code # getting video url from entry mp3_link = url_entry.get() # checking if the entry and combobox is empty if mp3_link == '': # display error message when url entry is empty showerror(title='Error', message='Please enter the MP3 URL') # else let's download the audio file else: # this try statement will run if the mp3 url is filled try: # this function will track the audio file download progress def on_progress(stream, chunk, bytes_remaining): # the total size of the audio total_size = stream.filesize # this function will get the size of the audio file def get_formatted_size(total_size, factor=1024, suffix='B'): # looping through the units for unit in ["", "K", "M", "G", "T", "P", "E", "Z"]: if total_size < factor: return f"{total_size:.2f}{unit}{suffix}" total_size /= factor # returning the formatted audio file size return f"{total_size:.2f}Y{suffix}" # getting the formatted audio file size calling the function formatted_size = get_formatted_size(total_size) # the size downloaded after the start bytes_downloaded = total_size - bytes_remaining # the percentage downloaded after the start percentage_completed = round(bytes_downloaded / total_size * 100) # updating the progress bar value progress_bar['value'] = percentage_completed # updating the empty label with the percentage value progress_label.config(text=str(percentage_completed) + '%, File size:' + formatted_size) # updating the main window of the app window.update() # creating the YouTube object and passing the the on_progress function audio = YouTube(mp3_link, on_progress_callback=on_progress) # extracting and downloading the audio file output = audio.streams.get_audio_only().download() # this splits the audio file, the base and the extension base, ext = os.path.splitext(output) # this converts the audio file to mp3 file new_file = base + '.mp3' # this renames the mp3 file os.rename(output, new_file) # popup for dispalying the mp3 downlaoded success message showinfo(title='Download Complete', message='MP3 has been downloaded successfully.') # ressetting the progress bar and the progress label progress_label.config(text='') progress_bar['value'] = 0 # the except will run when an expected error occurs during downloading except: showerror(title='Download Error', message='An error occurred while trying to ' \ 'download the MP3\nThe following could ' \ 'be the causes:\n->Invalid link\n->No internet connection\n'\ 'Make sure you have stable internet connection and the MP3 link is valid') # ressetting the progress bar and the progress label progress_label.config(text='') progress_bar['value'] = 0 # the function to run the download_audio function as a thread def downloadThread(): t1 = threading.Thread(target=download_audio) t1.start() # creates the window using Tk() fucntion window = Tk() # this will listen to the close window event window.protocol('WM_DELETE_WINDOW', close_window) # creates title for the window window.title('MP3 Downloader') # the icon for the application, this will replace the default tkinter icon window.iconbitmap(window, 'icon.ico') # dimensions and position of the window window.geometry('500x400+430+180') # makes the window non-resizable window.resizable(height=FALSE, width=FALSE) # creates the canvas for containing all the widgets canvas = Canvas(window, width=500, height=400) canvas.pack() """Styles for the widgets""" # style for the label label_style = ttk.Style() label_style.configure('TLabel', foreground='#000000', font=('OCR A Extended', 15)) # style for the entry entry_style = ttk.Style() entry_style.configure('TEntry', font=('Dotum', 15)) # style for the button button_style = ttk.Style() button_style.configure('TButton', foreground='#000000', font='DotumChe') # loading the MP3 logo logo = PhotoImage(file='mp3_icon.png') # creates dimensions for the logo logo = logo.subsample(2, 2) # adding the logo to the canvas canvas.create_image(180, 80, image=logo) # the Downloader label just next to the logo mp3_label = ttk.Label(window, text='Downloader', style='TLabel') canvas.create_window(340, 125, window=mp3_label) # creating a ttk label url_label = ttk.Label(window, text='Enter MP3 URL:', style='TLabel') # creating a ttk entry url_entry = ttk.Entry(window, width=72, style='TEntry') # adding the label to the canvas canvas.create_window(114, 200, window=url_label) # adding the entry to the canvas canvas.create_window(250, 230, window=url_entry) # creating the empty label for displaying download progress progress_label = Label(window, text='') # adding the label to the canvas canvas.create_window(240, 280, window=progress_label) # creating a progress bar to display progress progress_bar = ttk.Progressbar(window, orient=HORIZONTAL, length=450, mode='determinate') # adding the progress bar to the canvas canvas.create_window(250, 300, window=progress_bar) # creating the button download_button = ttk.Button(window, text='Download MP3', style='TButton', command=downloadThread) # adding the button to the canvas canvas.create_window(240, 330, window=download_button) # this runs the app infinitely window.mainloop()