I have been trying to move from Arrow to Pendulum given the raised concerns and the fact Arrow appears to no longer be maintained, but I can't seem to figure out (or find online or docs) how to do ...

Pass the three paramerters to the function getdate(data_ts, agg_type, no_times). For instance if we run print(getdates(1540439326000, 'year', 5)) the output obtained ...