Solve Python Virtualenv: is not recognized as an internal or external command - Windows

In this tutorial, I would like to show you the python problem solution that “'virtualenv' is not recognized as an internal or external command, operable program or batch file.”
Here I would like to know you that Python virtual environment manager: either venv or virtualenv. Each module is the preferred way to create and manage isolated virtual environments. venv is included in the Python standard library and requires no additional installation. Whereas virtualenv is included in the Python standard library and some other additional library installation.

0:00 - Problem Explanation
0:59 - Check Python by CMD
1:55 - Install “virtualenv” pip package
2:33 - Reinstall “virtualenv” pip package
3:55 - Solution-1: python -m virtualenv name_of_virtual_environment
5:15 - Solution-2: python -m venv name_of_virtual_environment
6:01 - Solution-3: py -3 -m virtualenv name_of_virtual_environment
6:57 - Solution-4: py -3 -m venv name_of_virtual_environment


Uninstall virtualenv with this command.
E:\code\python\tvenv $ pip uninstall virtualenv

Then just reinstall with this command.
E:\code\python\tvenv $ pip install virtualenv

Solution-1: python -m venv name_of_virtual_environment
E:\code\python\tvenv $ python -m venv myenv
E:\code\python\tvenv $ cd myenv\Scripts\
E:\code\python\tvenv\myenv\Scripts $ activate.bat
(myenv) E:\code\python\tvenv\myenv\Scripts $ deactivate.bat

Or,

E:\code\python\tvenv $ python -m virtualenv myenv
E:\code\python\tvenv $ cd myenv\Scripts
E:\code\python\tvenv\myenv\Scripts $ activate.bat
(myenv) E:\code\python\tvenv\myenv\Scripts $ deactivate.bat


Solution-2: py -3 -m venv name_of_virtual_environment
E:\code\python\tvenv $ py -3 -m venv myenv
E:\code\python\tvenv $ cd myenv\Scripts
E:\code\python\tvenv\myenv\Scripts $ activate.bat
(myenv) E:\code\python\tvenv\myenv\Scripts $ deactivate.bat

Or,

E:\code\python\tvenv $ py -3 -m virtualenv myenv
E:\code\python\tvenv $ cd myenv\Scripts
E:\code\python\tvenv\myenv\Scripts $ activate.bat
(myenv) E:\code\python\tvenv\myenv\Scripts $ deactivate.bat