Help with Python Turtle: The code is refusing to run with weird errors, and need code to run flawlessly.

Receiving errors as code being undefined such as $($examples$)$:

NameError: name 'lake' is not defined. $+$ Traceback error.

NameError: name 'ocean' is not defined.

My code so far:

import turtle

import random

from tkinter import Tk$,$ Label, Entry, Button, Scale

# Define global variables to store user inputs

num$\_$lakes $=0$

num$\_$mountains $=0$

num$\_$rivers $=0$

size$\_$multiplier $=1\mathrm{.}0$

def get$\_$user$\_$input$()$:

$"""$

Creates a GUI using Tkinter to obtain user input for the number of lakes, mountains, and rivers.

$"""$

def handle$\_$close$()$:

global num$\_$lakes, num$\_$mountains, num$\_$rivers, size$\_$multiplier

num$\_$lakes $=$ int$($lake$\_$entry.get$())$ if lake$\_$entry.get$()$ else $0$

num$\_$mountains $=$ int$($mountain$\_$entry.get$())$ if mountain$\_$entry.get$()$ else $0$

num$\_$rivers $=$ int$($river$\_$entry.get$())$ if river$\_$entry.get$()$ else $0$

size$\_$multiplier $=$ size$\_$scale.get$()$

window.destroy$()$

window $=$ Tk$()$

window.title$("$Island Generator Settings"$)$

lake$\_$label $=$ Label$($window$,$ text$=$"Number of Lakes:"$)$

lake$\_$label.grid$($row$=0,$ column$=0)$

lake$\_$entry $=$ Entry$($window$)$

lake$\_$entry.grid$($row$=0,$ column$=1)$

mountain$\_$label $=$ Label$($window$,$ text$=$"Number of Mountains:"$)$

mountain$\_$label.grid$($row$=1,$ column$=0)$

mountain$\_$entry $=$ Entry$($window$)$

mountain$\_$entry.grid$($row$=1,$ column$=1)$

river$\_$label $=$ Label$($window$,$ text$=$"Number of Rivers:"$)$

river$\_$label.grid$($row$=2,$ column$=0)$

river$\_$entry $=$ Entry$($window$)$

river$\_$entry.grid$($row$=2,$ column$=1)$

size$\_$scale$\_$label $=$ Label$($window$,$ text$=$"Island Size $($Scale$)")$

size$\_$scale$\_$label.grid$($row$=3,$ column$=0)$

size$\_$scale $=$ Scale$($window$,$ from$\_=1,$ to$\_=3,$ orient$=$'horizontal', resolution$=0\mathrm{.}1)$

size$\_$scale.set$(1)$ # Default size multiplier of $1$

size$\_$scale.grid$($row$=3,$ column$=1,$ columnspan$=2)$

button $=$ Button$($window$,$ text$=$"Generate Island", command$=$handle$\_$close$)$

button.grid$($row$=4,$ column$=0,$ columnspan$=3)$

window.mainloop$()$

# Call the function to get user input

get$\_$user$\_$input$()$

# Set up the turtle screen

screen $=$ turtle.Screen$()$

screen.setup$($width$=800,$ height$=600)$

screen.bgcolor$($ocean$)$

# Create a turtle instance

my$\_$turtle $=$ turtle.Turtle$()$

my$\_$turtle.speed$(0)$

def draw$\_$circle$($radius$,$ line$\_$color, fill$\_$color$)$:

$"""$

Draws a circle with the specified radius, line color, and fill color.

Args:

radius $($int$)$: The radius of the circle.

line$\_$color $($str$)$: The color of the circle's outline.

fill$\_$color $($str$)$: The color to fill the circle.

$"""$

my$\_$turtle.color$($line$\_$color$)$

my$\_$turtle.fillcolor$($fill$\_$color$)$

my$\_$turtle.begin$\_$fill$()$

my$\_$turtle.circle$($radius$)$

my$\_$turtle.end$\_$fill$()$

def move$\_$turtle$($x$,$ y$)$:

$"""$

Moves the turtle to the specified coordinates without drawing a line.

Args:

x $($int$)$: The x$-$coordinate of the destination.

y $($int$)$: The y$-$coordinate of the destination.

$"""$

my$\_$turtle.penup$()$

my$\_$turtle.goto$($x$,$ y$)$

my$\_$turtle.pendown$()$

def draw$\_$lake$()$:

$"""$

Draws a random lake circle within the boundaries of the landmass.

Increases the size of the lake based on the size multiplier.

$"""$

x$\_$limit $=$ int$(150*$ size$\_$multiplier$)//2-30*$ size$\_$multiplier # Adjusted for lake size

y$\_$limit $=$ int$(120*$ size$\_$multiplier$)//2-30*$ size$\_$multiplier # Adjusted for lake size

x $=$ random.randint$(-$x$\_$limit$,$ x$\_$limit$)$

y $=$ random.randint$(-$y$\_$limit$,$ y$\_$limit$)$

move$\_$turtle$($x$,$ y$)$

radius $=$ random.randint$(10,30)*$ size$\_$multiplier

draw$\_$circle$($radius$,$ lake, lake$)$

# Draw lakes

for $\_$ in range$($num$\_$lakes$)$:

draw$\_$lake$()$

# More functions to draw mountains and rivers can be added here using similar patterns

# Hide the turtle and display the result

my$\_$turtle.hideturtle$()$

turtle.done$()$