Python-使用tkinter canvas绘制的电子时钟

 #!/usr/bin/env python
 # -*- coding: utf-8 -*-

 from tkinter import *
 import math
 import threading
 import time

 root = Tk()
 cv = Canvas(root, bg='white')
 cv.create_oval(10,10,210,210,fill='yellow')
 cv.pack()
 for num in range(12):
     angle=num*30
     x1 = abs(round(math.cos(math.pi*angle/180)*95)+110)
     y1 = abs(110 - round(math.sin(math.pi*angle/180)*95))
     x2 = abs(round(math.cos(math.pi*angle/180)*100)+110)
     y2 = abs(110 - round(math.sin(math.pi*angle/180)*100))
     if angle not in (0, 90, 180, 270):
         cv.create_line(x1, y1, x2, y2)

 cv.create_line(110, 10, 110, 20, width=2, fill='red') #
 cv.create_text(110, 35, text='')
 cv.create_line(110, 200, 110, 210, width=2, fill='red') # 6
 cv.create_text(110, 185, text='')
 cv.create_line(10, 110, 20, 110, width=2, fill='red') #
 cv.create_text(35, 110, text='')
 cv.create_line(200, 110, 210, 110, width=2, fill='red') #
 cv.create_text(185, 110, text='')
 sec_pointer = cv.create_line(110, 110, 110, 110, fill='gray')
 miu_pointer = cv.create_line(110, 110, 110, 110, fill='green', width=2)
 hor_pointer = cv.create_line(110, 110, 110, 110, fill='red', width=3)
 cnt_point = cv.create_oval(107, 107, 113, 113, fill='black')

 time_struct = time.localtime()
 hour = time_struct.tm_hour - 12 if time_struct.tm_hour > 12 else time_struct.tm_hour
 _min = time_struct.tm_min
 sec = time_struct.tm_sec

 init_sec = sec*6
 init_miu = _min*6 + sec*6/60
 init_hor = hour * 30 + _min * 30/3600*60 + sec * 30/3600

 def draw_pointer():
     sec = 90 - init_sec
     miu = 90 - init_miu
     hor = 90 - init_hor
     try:
         while True:
             x1 = abs(round(math.cos(math.pi*sec/180)*90)+110)
             y1 = abs(110 - round(math.sin(math.pi*sec/180)*90))
             x2 = abs(round(math.cos(math.pi*miu/180)*70)+110)
             y2 = abs(110 - round(math.sin(math.pi*miu/180)*70))
             x3 = abs(round(math.cos(math.pi*hor/180)*36)+110)
             y3 = abs(110 - round(math.sin(math.pi*hor/180)*36))
             cv.coords(sec_pointer, 110, 110, x1, y1)
             cv.coords(miu_pointer, 110, 110, x2, y2)
             cv.coords(hor_pointer, 110, 110, x3, y3)
             if sec == -180:
                 sec = 180
             if miu == -180:
                 miu = 180
             if hor == -180:
                 hor = 180
             sec -=  6
             miu -= 6/60
             hor -= 30/3600
             time.sleep(1)
     except RuntimeError as e:
         exit(0)

 td = threading.Thread(target=draw_pointer,).start()
 root.mainloop()

canvas部件使用方法参考地址：https://www.runoob.com/python/python-tk-canvas.html