Add conda instruction to "How to Setup a Virtual Python Environment" (#1588)

* Added conda instruction to "How to Setup a Virtual Python Enironment" guide

* Corrected the table of content for "How to Setup a Virtual Python Environment"

* Added one bullet for removing a conda environment.

docs/howto_guides/How-To-Python-Virtual-Environment.md

@@ -1,7 +1,27 @@
-## HOWTO Setup a Python Virtual Environment
+# HOWTO Setup a Python Virtual Environment
 
 
-### Creating a Virtual Environment
+- [Using the Built-in venu Module in Python3](#using-the-built-in-venv-module-in-python-3)
+  * [Creating a Virtual Environment](#creating-a-virtual-environment)
+  * [Activating the Virtual Environment](#activating-the-virtual-environment)
+  * [Installing Python Modules Into Your Virtual Environment](#installing-python-modules-into-your-virtual-environment)
+  * [Deactivating the venv Shell](#deactivating-the-venv-shell)
+- [Using Conda](#using-conda)
+  * [Creating a Conda Environment with Commands](#creating-a-conda-environment-with-commands)
+  * [Creating a Conda Environment From a YAML File](#creating-a-conda-environment-from-a-yaml-file)
+  * [Activating the Conda Environment](#activating-the-conda-environment)
+  * [Installing Packages Into a Conda Environment](#installing-packages-into-a-conda-environment)
+  * [Deactivating an Active Conda Environment](#deactivating-an-active-conda-environment)
+  * [Removing a Conda Environment](#removing-a-conda-environment)
+
+- [References](#references)
+
+
+<!-- toc -->
+
+## [Using the Built-in venv Module in Python 3](#using-the-built-in-venv-module-in-python-3)
+
+### [Creating a Virtual Environment](#creating-a-virtual-environment)
 
 The following command creates a virtual Python environment:
 
@@ -19,7 +39,7 @@ in your home directory.
 	
 ```% python3 -m venv ~/myVenv```
 
-### Activating the Virtual Environment
+### [Activating the Virtual Environment](#activating-the-virtual-environment)
 
 To activate the virtual environment, execute the following:
 
@@ -29,7 +49,7 @@ To activate the virtual environment, execute the following:
 
 Note that the name of virtual environment is added to the command prompt.
 
-### Installing Python Modules Into Your Virtual Environment
+### [Installing Python Modules Into Your Virtual Environment](#installing-python-modules-into-your-virtual-environment)
 
 Use the following command to install Python modules into the virtual environment:
 
@@ -47,7 +67,7 @@ This Python module would be installed as follows:
 Every time ```myVenv``` is activated, the PyYAML module will be available.
 
 
-### Deactivating the venv Shell
+### [Deactivating the venv Shell](#deactivating-the-venv-shell)
 To deactivate the venv shell, execute the following:
 
 ```(myVenv) % deactivate```
@@ -56,3 +76,110 @@ To deactivate the venv shell, execute the following:
 The above should get you going. If you need more details, the following tutorial is pretty good.
 [RealPython Tutorial](https://realpython.com/python-virtual-environments-a-primer/).
 
+
+
+## [Using Conda](#using-conda)
+
+Conda is a powerful package manager and environment manager that you use with command line commands at the Anaconda Prompt for Windows, or in a terminal window for macOS or Linux.
+
+You can obtain conda by installing [Miniconda](https://docs.conda.io/projects/miniconda/en/latest/) or [Anaconda](https://docs.anaconda.com/free/anacondaorg/).
+
+Miniconda a small bootstrap version of Anaconda that includes only conda, Python, the packages they both depend on, and a small number of other useful packages (like pip, zlib, and a few others).
+
+Anaconda is a downloadable, free, open-source, high-performance, and optimized Python and R distribution. It includes conda, conda-build, Python, and 250+ automatically installed, open-source scientific packages and their dependencies that have been tested to work well together, including SciPy, NumPy, and many others.
+
+
+
+### [Creating a Conda Environment with Commands](#creating-a-conda-environment-with-commands)
+
+#### Create a conda virtial environment with Python by running one of following conda commands from a terminal:
+
+```
+# A specific version of Python
+% conda create --name trick python=3.9.18
+or
+% conda create -n trick python=3.9.18
+
+# The latest version of Python 3.9
+% conda create -n trick python=3.9
+
+# The lastest version of Python
+% conda create -n trick python
+
+# The latest version of Python 3.9 and packages
+% conda create -n trick python=3.9 pyyaml scipy
+```
+
+
+### [Creating a Conda Environment From a YAML File](#creating-a-conda-environment-from-a-yaml-file)
+
+#### Create the file ```myenv.yml``` with following contents: 
+
+```
+name: trick
+channels:
+    - conda-forge
+    - defaults
+dependencies:
+    - python = 3.9
+    - pyyaml
+```
+In this example, the environment is named ```trick``` and includes two packages: python and pyyaml.
+
+#### Run conda command to create the new environment: 
+
+Once you have your YAML file ready, you can create your conda environment using the following command in your terminal:
+
+```% conda env create -f myenv.yml```
+
+
+### [Activating the Conda Environment](#activating-the-conda-environment)
+
+After creating the environment, you can activate it using the following command:
+
+```% conda activate trick```
+
+
+### [Installing Packages Into a Conda Environment](#installing-packages-into-a-conda-environment)
+
+If you're in your conda environment, you can install package(s) using the following command:
+
+``` (trick) % conda install numpy scipy```
+
+
+If you're NOT in your conda environment, you can install package(s) into a specified environment using the following command:
+
+``` % conda install -n trick numpy scipy```
+
+
+### [Deactivating an Active Conda Environment](#deactivating-an-active-conda-environment)
+
+If you're in your conda environment, you can deactivate it using the following command:
+
+```(trick) % conda deactivate```
+
+
+### [Removing a Conda Environment](#removing-a-conda-environment)
+
+You can remove a conda environment from your terminal using the following command:
+
+``` % conda remove -n trick --all```
+
+or 
+
+``` % conda env remove -n trick```
+
+To verify that the environment was removed, run following from your terminal:
+
+``` % conda info --envs```
+
+The removed environment should not be shown.
+
+
+
+# [References](#references)
+
+* [RealPython Tutorial - Python Virtual Environment: A Primer](https://realpython.com/python-virtual-environments-a-primer/)
+* [Conda Document - Managing environments](https://conda.io/projects/conda/en/latest/user-guide/tasks/manage-environments.html)
+* [Creating an environment in Anaconda through a yml file](https://sachinjose31.medium.com/creating-an-environment-in-anaconda-through-a-yml-file-7e5deeb7676d)
+