Python是一种流行的编程语言，它可以用来编写各种各样的程序，包括数字画画。今天我们将通过使用Python画数字520来介绍Python的画图功能。

# 导入绘图库turtle
import turtle
# 设置画布和画笔
canvas = turtle.Screen()
pen = turtle.Turtle()
# 绘制数字5
pen.penup()
pen.goto(-100, 0)
pen.pendown()
pen.right(90)
pen.forward(100)
pen.left(90)
pen.forward(50)
pen.left(90)
pen.forward(100)
pen.right(90)
pen.forward(50)
pen.right(90)
pen.forward(100)
# 绘制数字2
pen.penup()
pen.goto(50, 50)
pen.pendown()
pen.right(180)
pen.forward(50)
pen.left(90)
pen.forward(50)
pen.left(45)
pen.forward(70.71)
pen.right(135)
pen.forward(100)
pen.right(135)
pen.forward(70.71)
# 绘制数字0
pen.penup()
pen.goto(200, 0)
pen.pendown()
pen.circle(50)
# 隐藏画笔
pen.hideturtle()
# 等待关闭画布
canvas.mainloop()

以上代码会用turtle库在屏幕上画出数字520。我们可以看到，使用Python绘图非常容易和有趣，也是提高编程技能的好方法。快来尝试使用Python画出你自己想要的图形吧！