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()

效果展示:

总结

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