DEFAULT_DELIM_NULL_STRINGS
Default strings that are considered null when reading CSV / TSV / delim files:
["", "NA", "N/A", "null", "NULL", "None", "none", "NIL", "nil"]
Default strings that are considered null when reading CSV / TSV / delim files:
["", "NA", "N/A", "null", "NULL", "None", "none", "NIL", "nil"]