Black formatting and pylint checking tools on python code

1. Apply the "black" tool to some trial repos. It standardizes the formatting of python code.
 
See https://github.com/psf/black for information on the tool. To install it, use

pip3 install black

To run it, use

black directory-or-filename . . .

or

python3 -m black directory-or-filename . . .

2. Modify the build process to invoke "black --check" as a pre-check.

3. Apply the pylint tool as well. Get the code to pass with a code of 10.0/10.0

4. Modify the build process to invoke pylint as a pre-check.