*【Python】【demo实验30】【练习实例】【使用Turtle实现实时时钟效果】

目的：

使用Turtle实现实时时钟效果

源代码：

# encoding=utf-8

# -*- coding: UTF-8 -*-

import turtle

from datetime import *

# 抬起画笔，向前运动一段距离放下

def Skip(step):

    turtle.penup()

    turtle.forward(step)

    turtle.pendown()

def mkHand(name, length):

    # 注册Turtle形状，建立表针Turtle

    turtle.reset()

    Skip(-length * 0.1)

    # 开始记录多边形的顶点。当前的乌龟位置是多边形的第一个顶点。

    turtle.begin_poly()

    turtle.forward(length * 1.1)

    # 停止记录多边形的顶点。当前的乌龟位置是多边形的最后一个顶点。将与第一个顶点相连。

    turtle.end_poly()

    # 返回最后记录的多边形。

    handForm = turtle.get_poly()

    turtle.register_shape(name, handForm)

def Init():

    global secHand, minHand, hurHand, printer

    # 重置Turtle指向北

    turtle.mode("logo")

    # 建立三个表针Turtle并初始化

    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)

    # 建立输出文字Turtle

    printer = turtle.Turtle()

    # 隐藏画笔的turtle形状

    printer.hideturtle()

    printer.penup()

def SetupClock(radius):

    # 建立表的外框

    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", "Saturday", "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():

    # 绘制表针的动态显示

    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)

    # 100ms后继续调用tick

    turtle.ontimer(Tick, 100)

def main():

    # 打开/关闭龟动画，并为更新图纸设置延迟。

    turtle.tracer(False)

    Init()

    SetupClock(160)

    turtle.tracer(True)

    Tick()

    turtle.mainloop()

if __name__ == "__main__":

    main()

————————（我是分割线）————————

参考：

1. https://blog.csdn.net/weixin_41988628/article/details/80718153

备注：

初次编辑时间：2019年10月4日16:35:32

环境：Windows 7   / Python 3.7.2