Trying to make a board with turtle, nothing happens when running script

[deanhystad]

This loop draws 1 line.

    for i in range(n):
        turtle.pen(fillcolor = "blue", pencolor = "black", pensize = 3)  # Place in front of loop.
        turtle.forward(length)
        turtle.up()
        turtle.right(90)
        turtle.forward(20)
        turtle.left(90)
        turtle.down()
        turtle.up()  # <- Pen is up when second iteration of loop runs

I would start by changing the code to this:

import turtle


def lines(n, length):
    turtle.pen(fillcolor="blue", pencolor="black", pensize=3)
    turtle.begin_fill()
    for i in range(n):
        turtle.forward(length)
        turtle.up()
        turtle.right(90)
        turtle.forward(20)
        turtle.left(90)
        turtle.down()
    turtle.end_fill()


def columns(n, length):
    turtle.pen(fillcolor="green", pencolor="black", pensize=3)
    turtle.begin_fill()
    for i in range(n):
        turtle.right(90)
        turtle.forward(length)
        turtle.up()
        turtle.left(90)
        turtle.forward(20)
        turtle.right(90)
        turtle.down()
    turtle.end_fill()


lines(3, 32)
columns(5, 7)
turtle.done()

Now you can at least see the turtle errors.