使用Python创建用于下载 Youtube 视频的 GUI
先决条件： Python GUI – tkinter
YouTube 是一个非常受欢迎的视频分享网站。从 YouTube 下载视频/播放列表是一项乏味的任务。通过 Downloader 下载该视频或尝试从随机网站下载该视频会增加窃取您的个人数据的风险。使用Python Tkinter 包，这个任务非常简单-高效-安全。很少有一堆代码会为您下载视频。为此，有两个Python库——Tkinter 和pytube 。
所需模块：
- pytube： pytube 是一个轻量级、易于使用、无依赖的Python库，用于从 web.pytube 下载视频，不是自动配置的库。您需要在使用前安装它。当你有 pip 时，pytube 的安装很容易。在终端或命令提示符中，键入以下命令来安装 pytube。
如果您使用的是 Mac OS X 或 Linux，那么以下两个命令之一可能会为您工作：
pip install pytube
git clone git://github.com/NFicano/pytube.git pytube | cd pytube | python setup.py install
- 如果你在 Window 的
pip install pytube3- Tkinter ： Tkinter 是一个Python绑定到 Tk GUI 工具包。它是 Tk GUI 工具包的标准Python接口，简单来说，Tkinter 被用作Python图形用户界面。 Tkinter 是本机库，您无需在外部安装它，只需导入即可。
下面是实现。
Python3
# Importing necessary packages
import tkinter as tk
from tkinter import *
from pytube import YouTube
from tkinter import messagebox, filedialog
# Defining CreateWidgets() function
# to create necessary tkinter widgets
def Widgets():
head_label = Label(root, text="YouTube Video Downloader Using Tkinter",
padx=15,
pady=15,
font="SegoeUI 14",
bg="palegreen1",
fg="red")
head_label.grid(row=1,
column=1,
pady=10,
padx=5,
columnspan=3)
link_label = Label(root,
text="YouTube link :",
bg="salmon",
pady=5,
padx=5)
link_label.grid(row=2,
column=0,
pady=5,
padx=5)
root.linkText = Entry(root,
width=35,
textvariable=video_Link,
font="Arial 14")
root.linkText.grid(row=2,
column=1,
pady=5,
padx=5,
columnspan=2)
destination_label = Label(root,
text="Destination :",
bg="salmon",
pady=5,
padx=9)
destination_label.grid(row=3,
column=0,
pady=5,
padx=5)
root.destinationText = Entry(root,
width=27,
textvariable=download_Path,
font="Arial 14")
root.destinationText.grid(row=3,
column=1,
pady=5,
padx=5)
browse_B = Button(root,
text="Browse",
command=Browse,
width=10,
bg="bisque",
relief=GROOVE)
browse_B.grid(row=3,
column=2,
pady=1,
padx=1)
Download_B = Button(root,
text="Download Video",
command=Download,
width=20,
bg="thistle1",
pady=10,
padx=15,
relief=GROOVE,
font="Georgia, 13")
Download_B.grid(row=4,
column=1,
pady=20,
padx=20)
# Defining Browse() to select a
# destination folder to save the video
def Browse():
# Presenting user with a pop-up for
# directory selection. initialdir
# argument is optional Retrieving the
# user-input destination directory and
# storing it in downloadDirectory
download_Directory = filedialog.askdirectory(
initialdir="YOUR DIRECTORY PATH", title="Save Video")
# Displaying the directory in the directory
# textbox
download_Path.set(download_Directory)
# Defining Download() to download the video
def Download():
# getting user-input Youtube Link
Youtube_link = video_Link.get()
# select the optimal location for
# saving file's
download_Folder = download_Path.get()
# Creating object of YouTube()
getVideo = YouTube(Youtube_link)
# Getting all the available streams of the
# youtube video and selecting the first
# from the
videoStream = getVideo.streams.first()
# Downloading the video to destination
# directory
videoStream.download(download_Folder)
# Displaying the message
messagebox.showinfo("SUCCESSFULLY",
"DOWNLOADED AND SAVED IN\n"
+ download_Folder)
# Creating object of tk class
root = tk.Tk()
# Setting the title, background color
# and size of the tkinter window and
# disabling the resizing property
root.geometry("520x280")
root.resizable(False, False)
root.title("YouTube Video Downloader")
root.config(background="PaleGreen1")
# Creating the tkinter Variables
video_Link = StringVar()
download_Path = StringVar()
# Calling the Widgets() function
Widgets()
# Defining infinite loop to run
# application
root.mainloop()输出：
