我正在编写从 youtube 下载歌曲的小程序(使用 pytube),我想添加 python tkinter GUI 以在文件下载时显示百分比值。
现在,当我执行我的代码时,程序首先下载文件(大约需要 60 秒),然后才显示 100% 的标签。如果我想在下载文件的同时看到标签值从 0% 攀升到 100%,我应该在代码中进行哪些更改?
代码 Python3:
from pytube import YouTube
import tkinter as tk
from tkinter import ttk
# main application shows:
# label Loading..
# label which configure values when file is downloading
# inderterminate progress bar
class MainApplication(tk.Frame):
def __init__(self, master=None, *args, **kwargs):
tk.Frame.__init__(self, master)
self.master = master
self.master.grid_rowconfigure(0, weight=0)
self.master.grid_columnconfigure(0, weight=1)
self.youtubeEntry = "https://www.youtube.com/watch?v=vVy9Lgpg1m8"
self.FolderLoacation = "C:/Users/Jonis/Desktop/"
# pytube
self.yt = YouTube(self.youtubeEntry)
video_type = self.yt.streams.filter(only_audio = True).first()
# file size of a file
self.MaxfileSize = video_type.filesize
# Loading label
self.loadingLabel = ttk.Label(self.master, text="Loading...", font=("Agency FB", 30))
self.loadingLabel.grid(pady=(100,0))
# loading precent label which must show % donwloaded
self.loadingPercent = tk.Label(self.master, text="", fg="green", font=("Agency FB", 30))
self.loadingPercent.grid(pady=(30,30))
# indeterminate progress bar
self.progressbar = ttk.Progressbar(self.master, orient="horizontal", length=500, mode='indeterminate')
self.progressbar.grid(pady=(50,0))
self.progressbar.start()
# call Download file func
self.DownloadFile
def DownloadFile(self):
self.yt.register_on_progress_callback(self.show_progress_bar)
self.yt.streams.filter(only_audio=True).first().download(self.FolderLoacation)
# func count precent of a file
def show_progress_bar(self, stream=None, chunk=None, file_handle=None, bytes_remaining=None):
# loadingPercent label configure value %
self.loadingPercent.config(text=str(100 - (100*(bytes_remaining/self.MaxfileSize))))
root = tk.Tk()
root.title("Youtube downloader")
root.geometry("1920x1080")
app = MainApplication(root)
root.mainloop()`