Ah, thanks@amanlai. On main,DataFrame.swapaxeshas been removed and the OP gives the output: [array([[1]]), array([[2]]), array([[3]])] On 2.2.x, I am seeing [ a 0 1, a 1 2, a 2 3] cc@jorisvandenbossche@phofl@mroeschke ...
Since the set of object instance methods on pandas data structures are generally rich and expressive, we often simply want to invoke, say, a DataFrame function on each group. The name GroupBy should be quite familiar to those who have used a SQL-based tool (oritertools), in which you can...
To make the size of the files more manageable, a skimming step was implemented that relies on ROOT's RDataFrame. Several cuts are applied, and additionally many type conversions are run for uproot usage at later steps. To run it: python bye_splits/production/produce.py --nevents -1 --...