Python openpyxl Pandas and Numpy

In this python tutorial, we will go over the following topics:
Convert a pandas dataframe to a spreadsheet with openpyxl (Pandas to Excel or LibreOffice Calc)
Convert a spreadsheet to a pandas dataframe with openpyxl (Excel or LibreOffice Calc to Pandas)
How to create a list or numpy array from spreadsheet column values with Excel or LibreOffice Calc.

openpyxl is a python library to read/write Excel files. openpyxl can help automate Excel with python (python excel tutorial with openpyxl). The worksheets can be opened with LibreOffice Calc, Numbers, or Google Sheets, etc., as well as with Excel.

This is part 06 of the openpyxl series. The topics covered in this series include:
00-openpyxl introduction
01-openpyxl append, access
02-openpyxl loading from file
03-openpyxl functions
04-openpyxl insert images
05-openpyxl insert, delete, move
06-openpyxl numpy, pandas
07-openpyxl charts
08-openpyxl styles
09-openpyxl conditional formatting
10-openpyxl filter and sort
11-openpyxl data validation