fix(python): fix for categorical inserts from row-oriented data #5462
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…uding dataclass/namedtuple)
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Closes #5457.
Delay application of
Categoricaltype until after initial load when initialisingDataFramefrom row-oriented data. Fixesthread '<unnamed>' panicked at 'Categorical(None).Update: also spotted that the same issue would occur on insert from
@dataclassand/orNamedTupledata (which is also naturally row-oriented) and fixed that too.Test coverage added for all of the above.