Error nicely on parse dates failure in read_csv#2863
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jcrist merged 1 commit intodask:masterfrom Nov 7, 2017
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In pandas, if a column specified in `parse_dates` has an invalid value, the column is silently converted to `object` dtype. This can cause issues if some columns infer as datetimes and others as object dtype, as converting with `astype` is prone to failure. To remedy this, we add a nice error message if any partition expecting a datetime dtype finds an object dtype instead.
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Planning on merging tonight if no comment. |
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In pandas, if a column specified in
parse_dateshas an invalid value,the column is silently converted to
objectdtype. This can causeissues if some columns infer as datetimes and others as object dtype, as
converting with
astypeis prone to failure.To remedy this, we add a nice error message if any partition expecting a
datetime dtype finds an object dtype instead.
Fixes #2845.