new tab in tkinter
from tkinter import *
from tkinter.ttk import Notebook # import Notebook
# create new window
root = Tk()
# create tabcontrol
tabcontrol = Notebook(root)
# create a number of tabs you want to add
tab1 = Frame(tabcontrol)
tab2 = Frame(tabcontrol)
# add the tabs to the tabcontrol
tabcontrol.add(tab1, text='This is Tab 1')
tabcontrol.add(tab2, text='This is Tab 2')
# grid the tabcontrol
tabcontrol.grid(column=0, row=0, padx=100, pady=100)
root.mainloop()