As to pattern matching instead of just suffix matching, this is not immediately possible. I had the idea a while ago to change

filename_suffix

to a more general

filename_pattern

but I don't think it ever got implemented. If there's interest in adding this we can certainly think again about it. For now, your options would be: * change your filenames to match a suffix pattern like *_this_is_it.csv (note in can be more than just the .csv file extension) * subclass

PartitionedDataSet

to make your own custom dataset type that implements

filename_pattern

instead of

filename_suffix

. This would be straightforward but a bit annoying given

partition.endswith(self._filename_suffix)

seems to appear in several methods