how to set a turtle to a turtle screen

Question

I have a game I am trying to make, but when I create my screen and my turtle, my turtle shows up on a different screen than the screen I made. If I were to run the code it would

Answer 1

Python turtle was designed to either be embedded in a Tk window of your own making or in a Tk window of it's making. The two choices are invoked differently, but by mixing the commands you end up with both. Taking the custom Tk window approach that you started:

from random import randint
from tkinter import *
from turtle import ScrolledCanvas, RawTurtle, TurtleScreen

health = 50
damage = 10
fight = randint(10, 20)
step = 0

def up():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(90)
    turtle.forward(10)

def down():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(-90)
    turtle.forward(10)

def left():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(180)
    turtle.forward(10)

def right():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(0)
    turtle.forward(10)

def combat():
    enemy = RawTurtle(canvas)
    enemy.up()
    eHealth = randint(20, 100)
    eDamage = randint(10, 20)

root = Tk()
canvas = ScrolledCanvas(root)
canvas.pack(side=LEFT)
screen = TurtleScreen(canvas)
turtle = RawTurtle(canvas)
turtle.up()

screen.onkey(up, "Up")
screen.onkey(down, "Down")
screen.onkey(left, "Left")
screen.onkey(right, "Right")
screen.listen()

screen.mainloop()

Or, we can simplify things a bit by letting the turtle module create the window, though we can shape it as needed through its method calls:

from random import randint
from turtle import Turtle, Screen

health = 50
damage = 10
fight = randint(10, 20)
step = 0

def up():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(90)
    turtle.forward(10)

def down():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(-90)
    turtle.forward(10)

def left():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(180)
    turtle.forward(10)

def right():
    global step

    if step == fight:
        combat()
    step += 1
    turtle.seth(0)
    turtle.forward(10)

def combat():
    enemy = Turtle()
    enemy.up()
    eHealth = randint(20, 100)
    eDamage = randint(10, 20)

screen = Screen()
screen.setup(500, 350)  # visible portion of screen area
screen.screensize(600, 600)  # scrollable extent of screen area
turtle = Turtle()
turtle.up()

screen.onkey(up, "Up")
screen.onkey(down, "Down")
screen.onkey(left, "Left")
screen.onkey(right, "Right")
screen.listen()

screen.mainloop()

You should be more circumspect in your use of import as importing the same modules two different ways will eventually confuse you and/or Python.