When I run pip install tkinter, an error is showing up

Question

when I run the command, pip install tkinter, this shows up:

ERROR: Could not find a version that satisfies the requirement tkinter (from versions: none)
ERROR: No matching distribution found for tkinter

in red colour. Any idea why this is happening?

tkinter code I wrote:

from tkinter import *

win = Tk()

def btn1():
  print("I Don't Know Your Name")

button1 =  Button(win, text="Click Me To Print SomeThing", command=btn1)

button1.pack()
win.mainloop()

Thanks!