Oh yes, stringsAsFactors...just seeing that almost conjures up flashbacks.<p>Data frames in Pandas have no such implicit stupidity. The rough equivalent, IIRC, is setting up one or more columns as an index (or multi-index, respectively), and that&#x27;s mostly done explicitly (with the exception of importing or exporting CSVs; the first column is imported as the index by default, and the index values are written out by default).