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6 changes: 4 additions & 2 deletions pandas/core/arrays/datetimes.py
Original file line number Diff line number Diff line change
Expand Up @@ -2231,8 +2231,10 @@ def maybe_convert_dtype(data, copy: bool, tz: tzinfo | None = None):

if is_float_dtype(data.dtype):
# pre-2.0 we treated these as wall-times, inconsistent with ints
# GH#23675, GH#45573 deprecated to treat symmetrically with integer dtypes
data = data.astype(np.int64)
# GH#23675, GH#45573 deprecated to treat symmetrically with integer dtypes.
# Note: data.astype(np.int64) fails ARM tests, see
# https://github.com/pandas-dev/pandas/issues/49468.
data = data.astype("M8[ns]").view("i8")
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if this works, can you add a comment about why its needed

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copy = False

elif is_timedelta64_dtype(data.dtype) or is_bool_dtype(data.dtype):
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