Some element names are not allowed.

Some keywords may not be used as names of elements (i.e., of CSV column headers):

• “state_list”

• “shape_warns”

• “state_warns”

• “shape_extras”

• “state_extras”

Note that in processing headers, the module ignores case, certain punctuation (dashes and understores), and whitespace, so none of the following variants of “state_list” may be used as element names (see Some variants of element names are tolerated.):

• “SC List”

• “SC-List”

• “SCLIST”