PyOpenGL を使えるようにしたいと思い Python のインストール状態を調べてみた．
PyOpenGL は Python 2.7 が奨励となっている？

Ubuntu

iwao@VB-Ubuntu:~$ python

Command 'python' not found, but can be installed with:

sudo apt install python3         # version 3.7.3-1, or
sudo apt install python          # version 2.7.16-1
sudo apt install python-minimal  # version 2.7.16-1

You also have python3 installed, you can run 'python3' instead.

iwao@VB-Ubuntu:~$ python3
Python 3.7.3 (default, Aug 20 2019, 17:04:43) 
[GCC 8.3.0] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
iwao@VB-Ubuntu:~$ 

Fedora

[Iwao@fedora ~]$ python
bash: python: コマンドが見つかりませんでした...
コマンド python' を提供するためにパッケージ 'python-unversioned-command' をインストールしますか? [N/y] n


[Iwao@fedora ~]$ python3
Python 3.7.4 (default, Jul  9 2019, 16:32:37) 
[GCC 9.1.1 20190503 (Red Hat 9.1.1-1)] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
[Iwao@fedora ~]$ 

Raspberry Pi

pi@raspberrypi:~ $ python
Python 2.7.13 (default, Sep 26 2018, 18:42:22) 
[GCC 6.3.0 20170516] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> 
pi@raspberrypi:~ $ python3
Python 3.5.3 (default, Sep 27 2018, 17:25:39) 
[GCC 6.3.0 20170516] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 
pi@raspberrypi:~ $ 

Win10 (VS 2017 , VS 2019)

Microsoft Windows [Version 10.0.18362.356]
(c) 2019 Microsoft Corporation. All rights reserved.

C:\Users\Iwao>py
Python 3.7.3 (v3.7.3:ef4ec6ed12, Mar 25 2019, 22:22:05) [MSC v.1916 64 bit (AMD64)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> ^Z


C:\Users\Iwao>where py
C:\Windows\py.exe

C:\Users\Iwao>

VS 2013 以降の「新規プロジェクト」で「Python」がある．