title: turtle module error with color()
body: <p>I am trying to write a program to have the user specify the colour of lines but I keep getting an error. Can someone please explain why this is happening </p>
  
  <pre><code>import turtle 
  wn = turtle.Screen()
  alex = turtle.Turtle
  sides = int(input("Enter the number of sides: "))
  angle = 360/ sides
  length = int(input("Enter the length of sides: "))
  line_color = input("Enter the color of the lines: ")
  alex.color(line_color)
  
  fill_color = input("Enter the fill color for the polygon:" )
  alex.fillcolor(fill_color)
  alex.begin_fill()
  for i in range(sides):
          alex.forward(lenght)
          alex.left(angle)
  alex.end_fill()
  </code></pre>