turtleclock.py

# coding=utf-8

import turtle
from datetime import *

# Lift the paintbrush and move it forward for a distance
def Skip(step):
    turtle.penup()
    turtle.forward(step)
    turtle.pendown()

def mkHand(name, length):
    # Register the Turtle shape and create the hand Turtle
    turtle.reset()
    Skip(-length * 0.1)
    # Start recording the vertices of the polygon. The current turtle position is the first vertex of the polygon.
    turtle.begin_poly()
    turtle.forward(length * 1.1)
    # Stop recording the vertices of the polygon. The current turtle position is the last vertex of the polygon. Will be connected to the first vertex.
    turtle.end_poly()
    # Return the last recorded polygon.
    handForm = turtle.get_poly()
    turtle.register_shape(name, handForm)

def Init():
    global secHand, minHand, hurHand, printer
    # Reset Turtle to point north
    turtle.mode("logo")
    # Create three hands Turtle and initialize
    mkHand("secHand", 135)
    mkHand("minHand", 125)
    mkHand("hurHand", 90)
    secHand = turtle.Turtle()
    secHand.shape("secHand")
    minHand = turtle.Turtle()
    minHand.shape("minHand")
    hurHand = turtle.Turtle()
    hurHand.shape("hurHand")

    for hand in secHand, minHand, hurHand:
        hand.shapesize(1, 1, 3)
        hand.speed(0)

    # Create output text Turtle
    printer = turtle.Turtle()
    # Hide the turtle shape of the brush
    printer.hideturtle()
    printer.penup()

def SetupClock(radius):
    # Create a table frame
    turtle.reset()
    turtle.pensize(7)
    for i in range(60):
        Skip(radius)
        if i % 5 == 0:
            turtle.forward(20)
            Skip(-radius - 20)

            Skip(radius + 20)
            if i == 0:
                turtle.write(int(12), align="center", font=("Courier", 14, "bold"))
            elif i == 30:
                Skip(25)
                turtle.write(int(i/5), align="center", font=("Courier", 14, "bold"))
                Skip(-25)
            elif (i == 25 or i == 35):
                Skip(20)
                turtle.write(int(i/5), align="center", font=("Courier", 14, "bold"))
                Skip(-20)
            else:
                turtle.write(int(i/5), align="center", font=("Courier", 14, "bold"))
            Skip(-radius - 20)
        else:
            turtle.dot(5)
            Skip(-radius)
        turtle.right(6)

def Week(t):   
    week = ["Monday", "Tuesday", "Wednesday",
            "Thursday", "Friday", "on Saturday", "on Sunday"]
    return week[t.weekday()]

def Date(t):
    y = t.year
    m = t.month
    d = t.day
    return "%s %d%d" % (y, m, d)

def Tick():
    # Draw the dynamic display of hands
    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)

    turtle.tracer(False) 
    printer.forward(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()
    turtle.tracer(True)

    # Continue to call tick after 100ms
    turtle.ontimer(Tick, 100)

def main():
    # Turn on / off turtle animation and set a delay for updating drawings.
    turtle.tracer(False)
    Init()
    SetupClock(160)
    turtle.tracer(True)
    Tick()
    turtle.mainloop()

if __name__ == "__main__":
    main()