实例7 -- 七段数码管

问题分析：

步骤1: 绘制单个数码管

详细代码

import turtle

import time

def draw_gap():

    """绘制数码管间隔"""

    turtle.penup()

    turtle.fd(5)

def draw_line(draw):

    """绘制单段数码管"""

    draw_gap()

    turtle.pendown() if draw else turtle.penup()

    turtle.fd(40)

    draw_gap()

    turtle.right(90)

def draw_digit(digit):

    """根据数字来绘制七段数码管"""

    draw_line(True) if digit in [2, 3, 4, 5, 6, 8, 9] else draw_line(False)

    draw_line(True) if digit in [0, 1, 3, 4, 5, 6, 8, 9] else draw_line(False)

    draw_line(True) if digit in [0, 2, 3, 5, 6, 8, 9] else draw_line(False)

    draw_line(True) if digit in [0, 2, 6, 8] else draw_line(False)

    turtle.left(90)

    draw_line(True) if digit in [0, 4, 5, 6, 8, 9] else draw_line(False)

    draw_line(True) if digit in [0, 2, 3, 5, 6, 7, 8, 9] else draw_line(False)

    draw_line(True) if digit in [0, 1, 2, 3, 4, 7, 8, 9] else draw_line(False)

    turtle.left(180)

    turtle.penup()

    turtle.fd(20)

def draw_date(date):

    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:

            draw_digit(eval(i))

def main():

    turtle.setup(800, 350, 200, 200)

    turtle.penup()

    turtle.fd(-300)

    turtle.pensize(10)

    draw_date(time.strftime('%Y-%m=%d+', time.gmtime()))

    # turtle.hideturtle()

    turtle.done()

if __name__ == '__main__':

    main()

举一反三

    模块化思维

    规则化思维

    化繁为简