Cheat sheet
Post date: Aug 2, 2015 8:51:58 AM
reverse order: http://stackoverflow.com/questions/20444087/right-way-to-reverse-pandas-dataframe
split string using multiple delimeters: http://stackoverflow.com/questions/4998629/python-split-string-with-multiple-delimiters
working with text data: http://pandas.pydata.org/pandas-docs/stable/text.html
pandas groupby-apply comparison with SQL: http://pandas.pydata.org/pandas-docs/stable/comparison_with_sql.html#group-by