How to cycle a Pandas dataframe grouping by hierarchical multiindex from top to bottom and store resultsQuestion about Hierarchical dataBest way to work with hierarchal python data that needs to be aggregated at many levelsRead hierarchical (tree-like) XML into a pandas dataframe, preserving hierarchyMASE Extraction Hierarchical Data ('hts' and 'forecast' packages R)Grouping and Multiindexing a pandas dataframePandas dataframe of dataframes with hierarchical columnsHow to store the dataframe from the output from group byConvert dict constructor to Pandas MultiIndex dataframePandas groupby result into a dataframePandas DataFrame --> GroupBy --> MultiIndex Process
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