Python绘制七段数码管实例代码

七段数码管（seven-segmentindicator）由7段数码管拼接而成，每段有亮或不亮两种情况，改进型的七段数码管还包括一个小数点位置

绘制模式：

input：输入当前日期的数字形式

process：根据每个数字绘制七段数码管表示

output：绘制当前日期的七段数码管表示

示例一：

#DrawSevenSegDisplay.py import turtle, datetime def drawLine(draw):  #绘制单段数码管   turtle.pendown() if draw else turtle.penup()   turtle.fd(40)   turtle.right(90) def drawDigit(digit): #根据数字绘制七段数码管   drawLine(True) if digit in [2,3,4,5,6,8,9] 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()   turtle.fd(20) def drawDate(date): #获得要输出的数字   for i in date:     drawDigit(eval(i)) #注意: 通过eval()函数将数字变为整数 def main():   turtle.setup(800, 350, 200, 200)   turtle.penup()   turtle.fd(-300)   turtle.pensize(5)   drawDate(datetime.datetime.now().strftime('%Y%m%d')) turtle.hideturtle()main() 

效果展示：

示例二：

#DrawSevenSegDisplay.py import turtle, datetime 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(d): #根据数字绘制七段数码管   drawLine(True) if d in [2,3,4,5,6,8,9] else drawLine(False)   drawLine(True) if d in [0,1,3,4,5,6,7,8,9] else drawLine(False)   drawLine(True) if d in [0,2,3,5,6,8,9] else drawLine(False)   drawLine(True) if d in [0,2,6,8] else drawLine(False)   turtle.left(90)   drawLine(True) if d in [0,4,5,6,8,9] else drawLine(False)   drawLine(True) if d in [0,2,3,5,6,7,8,9] else drawLine(False)   drawLine(True) if d in [0,1,2,3,4,7,8,9] else drawLine(False)   turtle.left(180)   turtle.penup()   turtle.fd(20) def drawDate(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:       drawDigit(eval(i)) def main():   turtle.setup(800, 350, 200, 200)   turtle.penup()   turtle.fd(-350)   turtle.pensize(5)   drawDate(datetime.datetime.now().strftime('%Y-%m=%d+'))   turtle.hideturtle() main()