Changing only fill or line color in Python turtle

Question

I want to change either the line or the fill color with a key, but not both. I've tried adding a dummy word in front of the comma, but it didn't work.

import turtle
from turtle import Turtle, Screen

screen = Screen()

PenWidth = int(input("Enter your Penwidth"))
jack = Turtle("turtle")
jack.color("red", "green")
jack.pensize(PenWidth)
jack.speed(0)

 
def blueLine():
    jack.color("blue")
def blueFill():
    jack.color("blue")
def up():
    jack.setheading(90)
    jack.forward(100)



turtle.listen()

turtle.onkey(up, "Up")
turtle.onkey(blueLine, "1")
turtle.onkey(blueFill,"+")

screen.mainloop()

Answer 1

I want to change either the line or the fill color with a key, but not both.

The simple answer is to invoke pencolor() and fillcolor() rather than color():

from turtle import Turtle, Screen

def blueLine():
    jack.pencolor('blue')

def blueFill():
    jack.fillcolor('blue')

def up():
    jack.setheading(90)
    jack.forward(100)

penWidth = int(input("Enter your pen width: "))

screen = Screen()

jack = Turtle('turtle')
jack.color('red', 'green')
jack.pensize(penWidth)
jack.speed('fastest')

screen.onkey(up, 'Up')
screen.onkey(blueLine, '1')
screen.onkey(blueFill, '+')
screen.listen()

screen.mainloop()