Python-七段数码管的绘制实例

基本思路:

1.绘制单个数字对应的数码管

2.获得一串数字,绘制对应的数码管

3.获得当前系统时间,绘制对应的数码管

import turtle

def drawLine(draw):
    turtle.pendown() if draw else turtle.penup();
    turtle.fd(40);
    turtle.right(90);

def drawDigit(digit):
    drawLine(True) if digit in [2,3,4,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,1,3,4,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,3,5,6,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,6,8] else drawLine(False);
    turtle.left(90);
    drawLine(True) if digit in [0,4,5,6,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,3,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,1,2,3,4,7,8,9] else drawLine(False);
    turtle.left(180);
    turtle.penup(); #为绘制后续数字确定位置
    turtle.fd(20);#为绘制后续数字确定位置

def drawDate(date):
    for i in date:
        drawDigit(eval(i));

def main():
    turtle.setup(800, 350, 200, 200);
    turtle.penup();
    turtle.fd(-300);
    turtle.pensize(5);
    drawDate('20190925');
    turtle.hideturtle();
    turtle.done();


main();

运行结果:

Python-七段数码管的绘制实例_第1张图片

绘制漂亮的七段数码管

增加七段数码管之间线条间隔

import turtle

def drawGap():#绘制数码管间隔
    turtle.penup();
    turtle.fd(5);

def drawLine(draw):#绘制单段数码管
    drawGap();
    turtle.pendown() if draw else turtle.penup();
    turtle.fd(40);
    drawGap();
    turtle.right(90);

def drawDigit(digit):#根据数字绘制七段数码管
    drawLine(True) if digit in [2,3,4,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,1,3,4,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,3,5,6,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,6,8] else drawLine(False);
    turtle.left(90);
    drawLine(True) if digit in [0,4,5,6,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,3,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,1,2,3,4,7,8,9] else drawLine(False);
    turtle.left(180);
    turtle.penup(); #为绘制后续数字确定位置
    turtle.fd(20);#为绘制后续数字确定位置

def drawDate(date):
    for i in date:
        drawDigit(eval(i));

def main():
    turtle.setup(800, 350, 200, 200);
    turtle.penup();
    turtle.fd(-300);
    turtle.pensize(5);
    drawDate('20190925');
    turtle.hideturtle();
    turtle.done();

运行结果:

Python-七段数码管的绘制实例_第2张图片

获取系统时间,绘制七段数码管

  • 使用time库获取系统时间
  • 增加年月日标记
  • 年月日颜色不同
import turtle, time

def drawGap():#绘制数码管间隔
    turtle.penup();
    turtle.fd(5);

def drawLine(draw):#绘制单段数码管
    drawGap();
    turtle.pendown() if draw else turtle.penup();
    turtle.fd(40);
    drawGap();
    turtle.right(90);

def drawDigit(digit):#根据数字绘制七段数码管
    drawLine(True) if digit in [2,3,4,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,1,3,4,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,3,5,6,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,6,8] else drawLine(False);
    turtle.left(90);
    drawLine(True) if digit in [0,4,5,6,8,9] else drawLine(False);
    drawLine(True) if digit in [0,2,3,5,6,7,8,9] else drawLine(False);
    drawLine(True) if digit in [0,1,2,3,4,7,8,9] else drawLine(False);
    turtle.left(180);
    turtle.penup(); #为绘制后续数字确定位置
    turtle.fd(20);#为绘制后续数字确定位置

def drawDate(date):#data为日期,格式为‘%Y-%m=%d+’
    turtle.pencolor("red");
    for i in date:
        if i == '-':
            turtle.write('年', font=("Arial", 18, "normal"));
            turtle.pencolor("green");
            turtle.fd(40);
        elif i == '=':
            turtle.write('月', font=("Arial", 18, "normal"));
            turtle.pencolor("blue");
            turtle.fd(40);
        elif i == '+':
            turtle.write('日', font=("Arial", 18, "normal"));
        else:
            drawDigit(eval(i));

def main():
    turtle.setup(800, 350, 200, 200);
    turtle.penup();
    turtle.fd(-300);
    turtle.pensize(5);
    drawDate(time.strftime('%Y-%m=%d+',time.gmtime()));
    turtle.hideturtle();
    turtle.done();


main();

Python-七段数码管的绘制实例_第3张图片

举一反三:理解思维方法

  • 模块儿化思维:确定模块儿接口,封装功能
  • 规则化思维:抽象过程为规则,计算机自动执行
  • 化繁为简:将大功能变为小功能组合,分而治之

本文仅为学习Python记录,资料来源于中国大学MOOC《Python语言设计》—嵩天

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