Preserve input data types #149
Closed
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As discussed in #138, when using
DataFrameMapper
withdefault=None
, the current behavior is to create anp.array
with the unselected columns. This has the undesired side effect of casting them to a common data type. This PR preserves the data types of unselected columns whendefault=None, input_df=True, output_df=True
.