Circular progress bar using Tkinter?

There's none built-in, but you can create one of your own. Here's an example of one way of doing it that manually draws and updates the graphics on a Canvas:

try:    import Tkinter as tk    import tkFont    import ttkexcept ImportError:  # Python 3    import tkinter as tk    import tkinter.font as tkFont    import tkinter.ttk as ttkclass CircularProgressbar(object):    def __init__(self, canvas, x0, y0, x1, y1, width=2, start_ang=0, full_extent=360):        self.custom_font = tkFont.Font(family="Helvetica", size=12, weight='bold')        self.canvas = canvas        self.x0, self.y0, self.x1, self.y1 = x0+width, y0+width, x1-width, y1-width        self.tx, self.ty = (x1-x0) / 2, (y1-y0) / 2        self.width = width        self.start_ang, self.full_extent = start_ang, full_extent        # draw static bar outline        w2 = width / 2        self.oval_id1 = self.canvas.create_oval(self.x0-w2, self.y0-w2,                                                self.x1+w2, self.y1+w2)        self.oval_id2 = self.canvas.create_oval(self.x0+w2, self.y0+w2,                                                self.x1-w2, self.y1-w2)        self.running = False    def start(self, interval=100):        self.interval = interval        self.increment = self.full_extent / interval        self.extent = 0        self.arc_id = self.canvas.create_arc(self.x0, self.y0, self.x1, self.y1,                                             start=self.start_ang, extent=self.extent,                                             width=self.width, style='arc')        percent = '0%'        self.label_id = self.canvas.create_text(self.tx, self.ty, text=percent,                                                font=self.custom_font)        self.running = True        self.canvas.after(interval, self.step, self.increment)    def step(self, delta):        """Increment extent and update arc and label displaying how much completed."""        if self.running:            self.cur_extent = (self.cur_extent + delta) % 360            self.canvas.itemconfigure(self.arc_id, extent=self.cur_extent)            percent = '{:.0f}%'.format(round(float(self.cur_extent) / self.full_extent * 100))            self.canvas.itemconfigure(self.label_id, text=percent)        self.after_id = self.canvas.after(self.interval, self.step, delta)    def toggle_pause(self):        self.running = not self.runningclass Application(tk.Frame):    def __init__(self, master=None):        tk.Frame.__init__(self, master)        self.grid()        self.createWidgets()    def createWidgets(self):        self.canvas = tk.Canvas(self, width=200, height=200, bg='white')        self.canvas.grid(row=0, column=0, columnspan=2)        self.progressbar = CircularProgressbar(self.canvas, 0, 0, 200, 200, 20)        self.pauseButton = tk.Button(self, text='Pause', command=self.pause)        self.pauseButton.grid(row=1, column=0)        self.quitButton = tk.Button(self, text='Quit', command=self.quit)        self.quitButton.grid(row=1, column=1)    def start(self):        self.progressbar.start()        self.mainloop()    def pause(self):        self.progressbar.toggle_pause()if __name__ == '__main__':    app = Application()    app.master.title('Sample application')    app.start()

Here's some screenshots of it running:

I dont have enough rep to add a comment but the code that martineau put up as is, does not currently work and you need to change

    if self.running:        self.cur_extent = (self.cur_extent + delta) % 360        self.canvas.itemconfigure(self.arc_id, extent=self.cur_extent)

to

    if self.running:        self.extent = (self.extent + delta) % 360        self.cur_extent = (self.extent + delta) % 360        self.canvas.itemconfigure(self.arc_id, extent=self.cur_extent)

Tkinter does not have any support for circular progress bars. You will have to draw your own using a series of images, or a drawing on a canvas.