<filename>skl_main.py
from tkinter import *
from tkinter import ttk
from tkinter import filedialog
from algorithm import *
from decision_tree_classifier import *
from gradient_boosting_classifier import *
from logistic_regression import *
import os
import cerberus

import gui

gui.root.mainloop()

<filename>skl_main.py
from tkinter import *
from tkinter import ttk
from tkinter import filedialog
from algorithm import *
from decision_tree_classifier import *
from gradient_boosting_classifier import *
from logistic_regression import *
import os
import cerberus

import gui

gui.root.mainloop()
