练习一下Python中的turtle库,这次根据系统时间绘制七段数码管,加深理解。
#根据系统时间绘制七段数码管
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(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) #在此回到了原点,须强制转向
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) #转向下一个数字的方向
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): #获得要输出的数字
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)) #通过eval()函数将数字变为整数
def main():
turtle.setup(800,350,200,200)
turtle.penup()
turtle.fd(-350)
turtle.pensize(5)
drawDate(time.strftime('%Y-%m=%d+',time.gmtime())) #符号: - = + 为自定义的标识符
turtle.hideturtle()
turtle.done()
main()