How to Draw the Graph of Date in Python


Here this example demonstrates how to draw a graph of date in Python. It simulates the operation of the seven-segment display.

Source Code

#! /usr/bin/env python3
# -*- coding: utf-8 -*-
# ce_drawSevenSegDisplay.py
# Draw a graph of date with seven-segment digital tube

import turtle
import datetime
import time

# Draw single tube 
def drawLine(draw=True):   
    turtle.pendown() if draw else turtle.penup()
    turtle.fd(40)
    turtle.right(90)

# Draw seven-segment display
def drawDigit(digit): 
    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)

# Input the date
def drawDate(date):  
    for i in date:
        drawDigit(eval(i)) 

def main():
    turtle.setup(800, 350, 200, 200)
    turtle.penup()
    turtle.fd(-300)
    turtle.pensize(5)
    drawDate(datetime.datetime.now().strftime('%Y%m%d'))
    time.sleep(20)

turtle.hideturtle()

if __name__ == '__main__':
    main()

After running the codes above, we can get these results:

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