how to create a tkinter window

from tkinter import *

mywindow = Tk() #Change the name for every window you make
mywindow.title("New Project") #This will be the window title
mywindow.geometry("780x640") #This will be the window size (str)
mywindow.minsize(540, 420) #This will be set a limit for the window's minimum size (int)
mywindow.configure(bg="blue") #This will be the background color

mywindow.mainloop() #You must add this at the end to show the window

#Creating Tkinter Window In Python:

from tkinter import *

new_window = Tk() #Create a window ; spaces should be denoted with underscores ; every window should have a different name
new_window.title("My Python Project") #Name of screen ; name should be the one which you already declared (new_window)
new_window.geometry("200x150") #Resizes the default window size
new_window.configure(bg = "red") #Gives color to the background

new_window.mainloop() #Shows the window on the screen

#!/usr/bin/python

import Tkinter
top = Tkinter.Tk()
# Code to add widgets will go here...
top.mainloop()

# Python 3.x
import tkinter
top = tkinter.Tk()
# Code to add widgets will go here...
top.mainloop()

# I recommend creating each tkinter window as a child class to a frame.
# This keeps all methods related to the window encapsulated, and makes
# your code alot more understandable and readable :)

# This will import all the widgets 
# and modules which are available in 
# tkinter and ttk module 
from tkinter import * 
from tkinter.ttk import *
  
# creates a Tk() object 
master = Tk() 
  
# sets the geometry of main  
# root window 
master.geometry("200x200") 
  
  
# function to open a new window  
# on a button click 
def openNewWindow(): 
      
    # Toplevel object which will  
    # be treated as a new window 
    newWindow = Toplevel(master) 
  
    # sets the title of the 
    # Toplevel widget 
    newWindow.title("New Window") 
  
    # sets the geometry of toplevel 
    newWindow.geometry("200x200") 
  
    # A Label widget to show in toplevel 
    Label(newWindow,  
          text ="This is a new window").pack() 
  
  
label = Label(master,  
              text ="This is the main window") 
  
label.pack(pady = 10) 
  
# a button widget which will open a  
# new window on button click 
btn = Button(master,  
             text ="Click to open a new window",  
             command = openNewWindow) 
btn.pack(pady = 10) 
  
# mainloop, runs infinitely 
mainloop()