No module named 'Tkinter'

[All_ex_Under]

I'm a beginner, and from my first steps, I have a strange problem. No matter what I have done (google it, set a virtual environment, reinstalling the language several times, installing deferent versions of the language) when I'm trying to give the code:

from future.moves import Tkinter as tk
window = tk.tk()
# to rename the title of the window
window.title("GUI")
# pack is used to show the object in the window
label = tk.label(window, text = "Welcome to DataCamp's Tutorial on Tkinter!").pack()

It gives me the following error:

Error:
Traceback (most recent call last):
  File "D:/Applications/Python 3.7.2/Scripts/Modules-and-Functions-in-Python-Introduction-to-Tkinter-Source-code/sowtest.py", line 1, in <module>
    from future.moves import Tkinter as tk
  File "C:\Users\Αλέκος Βαγιώνης\venv\python 3.7\lib\site-packages\future\moves\tkinter\__init__.py", line 27, in <module>
    from Tkinter import *
ModuleNotFoundError: No module named 'Tkinter'

Process finished with exit code 1

All that, after I have tried with pip in the CMD to install the module.
Though it is included with Python (as I know)
I am running a Windows 10 tablet and I have the 3.7.3 version of Python.