[Tutor] help with macOS version 10.12.5

[maia fornaro]

Hello, My name is maia and I'm train to install python 3 in my macOS  sierra version 10.12.5 and I receive this error went i open python:

Python 3.6.1 (v3.6.1:69c0db5050, Mar 21 2017, 01:21:04) 
[GCC 4.2.1 (Apple Inc. build 5666) (dot 3)] on darwin
Type "copyright", "credits" or "license()" for more information.
>>> WARNING: The version of Tcl/Tk (8.5.9) in use may be unstable.
Visit http://www.python.org/download/mac/tcltk/ for current information.

I try to install another tcltk version but still have the same error, so I will like for your help.
Thanks !
Maia