title: Python Coding Need Assistance
body: <p>I am having trouble with my code, I don't know what I can do. My code has a variable "bheight" and it splits into parts automatically(which I have coded and is good) but I want it so whenever it goes through the "def Building():" code it adds 1 onto bheight[0] so when it loops through next time it'll be bheight[1].</p>
  
  <pre><code>import turtle
  turtle.bgcolor("orange")
  
  blist = input('Please enter builidng heights e.g. "50 30 60"')
  leo = turtle.Turtle()
  bsplit = blist.split()
  bheight = list(map(int, bsplit))
  size = len(bsplit)
  
  def Water():
      leo.penup()
      leo.goto(-200,0)
      leo.fillcolor('midnightblue')              
      leo.begin_fill()
      for a in range (1,3):
          leo.forward(400)
          leo.right(90)
          leo.forward(150)
          leo.right(90)
      leo.end_fill()
      leo.pendown()
  
  def Building():
      for x in range (0,int(size)):
          leo.fillcolor('darkslategrey')
          leo.begin_fill()
          leo.left(90)
          leo.forward(bheight[-1+1])
          leo.right(90)
          leo.forward(20)
          leo.right(90)
          leo.forward(bheight[-1+1])
          leo.left(90)
          leo.end_fill()
  
  
  
  def Reset():
      leo.towards(leo)  
  
  Water()
  Building()
  </code></pre>