Python 七段数码管绘制

///最近在学习Python，一道小的课后练习，利用turtle 库绘制七段数码管，并显示系统当前日期。想到之前单片机中的数码管驱动，采用解码方式绘制七段码。输入任意一个日期，如20170623，打印该日期。

#Seven_SEG_Data_Show
from turtle import Turtle
#绘制数码管的一段，x,y是起始坐标
def draw_line(pen,x,y,n):    
        if n==0:
            pen.penup()
            pen.goto(x,y+2)
            pen.left(90)
            pen.pendown()
            pen.forward(50)
            pen.right(90)
        elif n==1:
            pen.penup()
            pen.goto(x,y+56)
            pen.left(90)
            pen.pendown()
            pen.forward(50)
            pen.right(90)
        elif n==2:    
            pen.penup()
            pen.goto(x+2,y+108)
            pen.pendown()
            pen.forward(50)
        elif n==3:
            pen.penup()
            pen.goto(x+54,y+106)
            pen.right(90)
            pen.pendown()
            pen.forward(50)
            pen.left(90)
        elif n==4:
            pen.penup()
            pen.goto(x+54,y+52)
            pen.pendown()
            pen.right(90)
            pen.forward(50)
            pen.left(90)
        elif n==5:
            pen.penup()
            pen.goto(x+2,y)
            pen.pendown()
            pen.forward(50)
        elif n==6:
            pen.penup()
            pen.goto(x+2,y+54)
            pen.pendown()
            pen.forward(50)
#将数字解码为对应的七段码           
def number_decode(num):
    if num==0:
        seven_seg=[1,1,1,1,1,1,0]
    elif num==1:
        seven_seg=[0,0,0,1,1,0,0]
    elif num==2:
        seven_seg=[1,0,1,1,0,1,1]
    elif num==3:
        seven_seg=[0,0,1,1,1,1,1]
    elif num==4:
        seven_seg=[0,1,0,1,1,0,1]
    elif num==5:
        seven_seg=[0,1,1,0,1,1,1]
    elif num==6:
        seven_seg=[1,1,1,0,1,1,1]
    elif num==7:
        seven_seg=[0,0,1,1,1,0,0]
    elif num==8:
        seven_seg=[1,1,1,1,1,1,1]
    elif num==9:
        seven_seg=[0,1,1,1,1,1,1]
    return seven_seg
#绘制一个七段码数字
def draw_num(seven_seg,x,y,color):
    pen=Turtle()
    pen.hideturtle()
    pen.color(color)
    pen.pensize(3)
    pen.speed(100)
    sequence=0
    for i in seven_seg:
        if i==1:
            draw_line(pen,x,y,sequence)
        sequence=sequence+1
#日期显示      
def dateShow(date,color):
    x_location=-260
    for i in date:
        decode_num=number_decode(int(i))
        draw_num(decode_num,x_location,0,color)
        x_location=x_location+70
def main():
    date=input("please input date number:")
    dateShow(date,"red")
main()

输入任意一个日期，如20170623，打印该日期。

程序可以改进的地方还有很多，大家可以自己多做练习。