在用python做一个GUI界面时，想搞一个进度条实时显示下载进度，但查阅很多博客，最后的显示效果都类似下面这种：

这种效果在CMD界面看着还可以，但放到图形界面时就有点丑了，所以我用Canvas重新做了一个进度条，完美满足了我的要求，看着也比较舒服。

import timeimport threadingfrom tkinter import * def update_progress_bar(): for percent in range(1, 101): hour = int(percent/3600) minute = int(percent/60) - hour*60 second = percent % 60 green_length = int(sum_length * percent / 100) canvas_progress_bar.coords(canvas_shape, (0, 0, green_length, 25)) canvas_progress_bar.itemconfig(canvas_text, text='%02d:%02d:%02d' % (hour, minute, second)) var_progress_bar_percent.set('%0.2f %%' % percent) time.sleep(1) def run(): th = threading.Thread(target=update_progress_bar) th.setDaemon(True) th.start() top = Tk()top.title('Progress Bar')top.geometry('800x500+290+100')top.resizable(False, False)top.config(bg='#535353') # 进度条sum_length = 630canvas_progress_bar = Canvas(top, width=sum_length, height=20)canvas_shape = canvas_progress_bar.create_rectangle(0, 0, 0, 25, fill='green')canvas_text = canvas_progress_bar.create_text(292, 4, anchor=NW)canvas_progress_bar.itemconfig(canvas_text, text='00:00:00')var_progress_bar_percent = StringVar()var_progress_bar_percent.set('00.00 %')label_progress_bar_percent = Label(top, textvariable=var_progress_bar_percent, fg='#F5F5F5', bg='#535353')canvas_progress_bar.place(relx=0.45, rely=0.4, anchor=CENTER)label_progress_bar_percent.place(relx=0.89, rely=0.4, anchor=CENTER)# 按钮button_start = Button(top, text='开始', fg='#F5F5F5', bg='#7A7A7A', command=run, height=1, width=15, relief=GROOVE, bd=2, activebackground='#F5F5F5', activeforeground='#535353')button_start.place(relx=0.45, rely=0.5, anchor=CENTER) top.mainloop()

显示效果如下：

以上这篇对python GUI实现完美进度条的示例详解就是小编分享给大家的全部内容了，希望能给大家一个参考，也希望大家多多支持。