API/DEPR: interpolate with object dtype #53631
Labels
API Design
Deprecate
Functionality to remove in pandas
Missing-data
np.nan, pd.NaT, pd.NA, dropna, isnull, interpolate
ATM if we have object-dtype, interpolate is incorrectly a no-op. (In the DataFrame case we have a weird check that raises on all-object).
If we disable the check in Block.interpolate
if m is None and self.dtype.kind != "f":
that short-circuits, then the OP case raises in np.interp when trying to cast to float64.The viable options I see are:
I lean towards "do 2) immediately and 1) with a deprecation cycle".
(I haven't checked the scipy paths, just the numpy one)
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