python pandas - ghdrako/doc_snipets GitHub Wiki https://www.askpython.com/python-modules/pandas/conditionally-grouping-values https://github.com/FisherKK/Portfolio/blob/master/Showcases/Data%20Engineering/Pandas%20IO%20Formats%20Comparison/Pandas%20IO%20Formats%20Comparison.ipynb https://analityk.edu.pl/python-pandas-mega-tutorial/