编写时钟程序

from turtle import *from datetime import *def skip(step):     penup()     fd(step)     pendown()def mkhand(name,length):     reset()     skip(-length*0.1)     begin_poly()     fd(length*1.1)     end_poly()     handform = get_poly()     register_shape(name,handform)def init():     global sechand,minhand,hurhand,printer     mode("logo")   #重置turtle指向北     mkhand("sechand",125)     mkhand("minhand",130)     mkhand("hurhand",90)     sechand = Turtle()     sechand.shape("sechand")     minhand = Turtle()     minhand.shape("minhand")     hurhand = Turtle()     hurhand.shape("hurhand")     for hand in sechand,minhand,hurhand:          hand.shapesize(100,1,3)          hand.speed(0)     printer = Turtle()     printer.hideturtle ()     printer.penup()def setupclock(radius):     reset()     pensize(7)     for i in range(60):          skip(radius)          if i % 5 == 0:               fd(20)               skip(-radius-20)          else:               dot(5)               skip(-radius)          right(6)def week(t):     week = ["星期一","星期二","星期三","星期四","星期五","星期六","星期日"]     return week[t.weekday()]def date(t):     y = t.year     m = t.month     d = t.day     return "%s年%d月%d日" % (y,m,d)def tick():     t = datetime.today()     second = t.second + t.microsecond*0.000001     minute = t.minute + second/60.0     hour = t.hour + minute/60.0     sechand.setheading(6*second)     minhand.setheading(6*minute)     hurhand.setheading(30*hour)     tracer(False)     printer.fd(65)     printer.write(week(t),align='center',font=("Courier",14,"bold"))     printer.back(130)     printer.write(date(t),align='center',font=("Courier",14,"bold"))     printer.home()     tracer(True)     ontimer(tick,10)  #每10ms调用一次tick函数def main():     tracer(False)     init()     setupclock(160)     tracer(True)     tick()     mainloop()     main()'''if __name__ == '__main()__':     main()'''