Modern Art Generator

"""
Dummy program to test out Tkinter on Mac
"""

from tkinter import *
from random import randint, choice

def Get_Hex():
    Hex_Combination = "#"
    Available_Characters = ["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"]
    for Character in range(0,6):
        Hex_Combination += choice(Available_Characters)
    return Hex_Combination

def Do_Art():
    Canvas_Draw = Canvas(Main_Frame,width=int(Entry_Width.get()),height=int(Entry_Height.get()))
    Canvas_Draw.grid(columnspan=2, row=3)
    Co_Ordinates = [randint(0,int(Entry_Width.get())),randint(0,int(Entry_Height.get())),randint(0,int(Entry_Width.get())),randint(0,int(Entry_Height.get()))]
    Canvas_Draw.create_line(Co_Ordinates)

    for Line in range(0,100):
        Co_Ordinates[0], Co_Ordinates[1] = Co_Ordinates[2], Co_Ordinates[3]
        Co_Ordinates[2], Co_Ordinates[3] = randint(0,int(Entry_Width.get())), randint(0,int(Entry_Height.get()))
        Canvas_Draw.create_line(Co_Ordinates,fill=Get_Hex())

Main_Window = Tk()
Main_Frame = Frame(Main_Window)
Label_Width = Label(Main_Frame,text="Canvas Width:")
Label_Height = Label(Main_Frame,text="Canvas Height:")
Entry_Width = Entry(Main_Frame)
Entry_Height = Entry(Main_Frame)
Button_Do_Art = Button(Main_Frame,text="DoArt",command=Do_Art,fg=Get_Hex())


Main_Frame.pack()
Label_Width.grid(row=0, column = 0)
Label_Height.grid(row=1, column = 0)
Entry_Width.grid(row=0, column = 1)
Entry_Height.grid(row=1, column=1)
Entry_Width.insert(0,"800")
Entry_Height.insert(0,"600")
Button_Do_Art.grid(row=2, columnspan=2)

Main_Window.mainloop()