BUG: series resample with timedelta values looses dtype (GH13119) #14118
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pandas/types/cast.py
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| if issubclass(dtype.type, np.floating): | ||
| return result.astype(dtype) | ||
| elif dtype == np.bool_ or issubclass(dtype.type, np.integer): | ||
| elif (dtype == np.bool_ or issubclass(dtype.type, np.integer) and |
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change these to use is_bool_dtype and such (iow thr pandas intro spectors)
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ah yes, this probably solves the timedelta problem at once as well
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have to be careful about timedeltas because they are represented as integers, so new to be clear which dtype you have (and don't mix); this is more of an in general statement (not necessarily relevant to this particular question)
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The issue in this case was exactly something like that: a timedelta dtype passed the issubclass(dtype.type, np.integer) check, and for this reason the specific elif close for datetimes and timedeltas more below at line 128 was not used for timedeltas (but was correct for datetimes).
Current coverage is 85.27% (diff: 100%)@@ master #14118 diff @@
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git diff upstream/master | flake8 --diff