title: Filling a shape with color in python turtle
body: <p>I'm trying to fill a shape with a color but when I run it, it does not show.
  Am I not supposed to use classes for this? I am not proficient with python-3 and still learning how to use classes</p>
  
  <pre><code>import turtle
  
  t=turtle.Turtle()
  t.speed(0)
  
  
  class Star(turtle.Turtle):
      def __init__(self, x=0, y=0):
          turtle.Turtle.__init__(self)
          self.shape("")
          self.color("")
  #Creates the star shape    
      def shape(self, x=0, y=0):
          self.fillcolor("red")
          for i in range(9):
          self.begin_fill()
          self.left(90)
          self.forward(90)
          self.right(130)
          self.forward(90)
          self.end_fill()
  #I was hoping this would fill the inside        
      def octagon(self, x=0.0, y=0.0):
          turtle.Turtle.__init__(self)
  
      def octa(self): 
          self.fillcolor("green")
          self.begin_fill()
          self.left(25)
          for x in range(9):
              self.forward(77)
              self.right(40)
  
  #doesn't run with out this
  a=Star()
  </code></pre>