如何在python中创建下载栏

Question

因此，我正在开发该程序，该程序应该使用tkinter和urllib.request从网络上下载内容，但是它缺少下载栏（或者进度条，如果那是真的话）。因此，我发现可以使用TQDM创建进度条，但是有两个问题：首先，我似乎没有找到在tkinter程序中使用它的方法。其次，它不显示下载速度，您只需设置一个限制，它就会填满直到达到该限制。我再次进行了一些研究，发现可以使用ttk创建进度条，但仍然存在第二个问题（它没有显示用户的Internet（下载）速度，以及文件的数量已像chrome的下载栏一样下载了）。有人可以帮我吗？我的代码（顺便说一句，如果您有任何建议使我的程序更好，我将不胜感激）：

from tkinter import *
from tkinter import font as tkFont
import random
import urllib.request
import requests
from tqdm import tqdm
from tqdm.auto import tqdm


def printsth():
    print("Yay it works! ")


def main_menu():
    root = Tk()
    # the top menu
    num = IntVar()
    # var = IntVar()
    menu = Menu(root)
    root.config(menu=menu)
    submenu = Menu(menu)
    menu.add_cascade(label="Settings", menu=submenu)

    def custom_op():
        custom = Tk()

        custom.mainloop()
    submenu.add_command(label="Customization ", command=custom_op)

    def settings_op():
        set_win = Tk()

        set_win.mainloop()
    submenu.add_command(label="Settings ", command=settings_op)
    submenu.add_separator()
    submenu.add_command(label="Exit", command=root.destroy)

    # the edit menu
    editmenu = Menu(menu)
    menu.add_cascade(label="Edit", menu=editmenu)
    editmenu.add_command(label="Redo...", command=printsth)

    # the tool bar
    toolbar = Frame(root, bg="light gray")
    insert_button = Button(toolbar, text="Insert an image", command=printsth)
    insert_button.pack(side=LEFT, padx=2, pady=2)
    print_button = Button(toolbar, text="Print", command=printsth)
    print_button.pack(side=LEFT, padx=2, pady=2)
    toolbar.pack(side=TOP, fill=X)

    # the download function
    def download_image():
        global formatname
        if num.get() == 1:
            name = random.randrange(1, 100000)
        else:
            name = str(name_entry.get())
        formatname = str(format_entry.get())
        '''if var.get() == 1:
            operator = str(url_entry.get())
            formatname = '.' + operator[-3] + operator[-2] + operator[-1]
        else:
            pass'''
        fullname = str(name) + formatname
        url = str(url_entry.get())
        fw = open('file-size.txt', 'w')
        file_size = int(requests.head(url, headers={'accept-encoding': ''}).headers['Content-Length'])
        fw.write(str(file_size))
        fw.close()
        path = str(output_entry.get()) + "\\"
        urllib.request.urlretrieve(url, path.replace("\\", "\\\\") + fullname)

    # the status bar
    status_bar = Label(root, text="Downloading...", bd=1, relief=SUNKEN, anchor=W)
    status_bar.pack(side=BOTTOM, fill=X)

    # the download frame
    body_frame = Frame(root, bg="light blue")
    download_button = Button(body_frame, text="Download! ", command=download_image, border=3, width=20, height=5)
    download_design = tkFont.Font(size=12, slant='italic')
    download_button['font'] = download_design
    download_button.pack(side=LEFT, pady=5, padx=5)
    body_frame.pack(side=LEFT, fill=Y)
    # the main interaction menu
    inter_frame = Frame(root)
    url_entry = Entry(inter_frame)
    label = Label(inter_frame, text="Enter the image URL: ")
    file_format = Label(inter_frame, text="Choose your file format: ")
    format_entry = Entry(inter_frame)
    file_name = Label(inter_frame, text="File's name: ")
    name_entry = Entry(inter_frame)
    check_name = Checkbutton(inter_frame, text="Give a random name", variable=num)
    # check_format = Checkbutton(inter_frame, text="Download with default format", variable=var)
    output_path = Label(inter_frame, text="Choose output path: ")
    output_entry = Entry(inter_frame)
    file_name.pack(anchor=CENTER, expand=1)
    name_entry.pack(anchor=CENTER, expand=1)
    check_name.pack(anchor=CENTER, expand=1)
    label.pack(anchor=CENTER, expand=1)
    url_entry.pack(anchor=CENTER, expand=1)
    file_format.pack(anchor=CENTER, expand=1)
    format_entry.pack(anchor=CENTER, expand=1)
    # check_format.pack(anchor=CENTER)
    output_path.pack(anchor=CENTER, expand=1)
    output_entry.pack(anchor=CENTER, expand=1)
    inter_frame.pack(expand=1)
    root.mainloop()

    # the end!


main_menu()

Answer 1

这是我的状态栏工具中的代码段

progress = ttk.Progressbar(self, orient=HORIZONTAL, length=400,  mode='determinate')
progress.grid(row=3, column=0, pady=2, padx=2, columnspan=4, sticky=SW+SE)
progress.pack(side=BOTTOM, anchor=S, expand=YES)
progress["maximum"] = 100
progerss_part = 0

您可以通过使用来更新进度

progress["value"] = x

希望这会对您有所帮助。