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Add date attribute to datetime accessor #4994

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merged 10 commits into from
Mar 16, 2021
Merged

Add date attribute to datetime accessor #4994

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6470695
add date accessor to accessor_dt.py (GH4983)
observingClouds Mar 4, 2021
ffbc5f0
raise error when using date with CFTimeIndex
observingClouds Mar 4, 2021
b107288
Add tests
observingClouds Mar 15, 2021
46b1f0d
Mention changes in whats-new.rst
observingClouds Mar 15, 2021
06a3cc4
Merge branch 'master' into datetime_accessor
observingClouds Mar 15, 2021
71a4221
Add DatetimeAccessor.date to api-hidden.rst
observingClouds Mar 15, 2021
fc7d202
Add attribute to api.rst
observingClouds Mar 15, 2021
7877c41
Merge branch 'datetime_accessor' of github.com:observingClouds/xarray…
observingClouds Mar 15, 2021
0baab07
Merge branch 'master' into datetime_accessor
observingClouds Mar 15, 2021
b3dbb34
Change AttributeError message
observingClouds Mar 15, 2021
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8 changes: 8 additions & 0 deletions xarray/core/accessor_dt.py
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Original file line number Diff line number Diff line change
Expand Up @@ -31,6 +31,10 @@ def _access_through_cftimeindex(values, name):
if name == "season":
months = values_as_cftimeindex.month
field_values = _season_from_months(months)
elif name == "date":
raise AttributeError(
"Attribute `date` is not available for CFTimeIndex. Consider using `floor('D')` instead."
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)
else:
field_values = getattr(values_as_cftimeindex, name)
return field_values.reshape(values.shape)
Expand Down Expand Up @@ -415,6 +419,10 @@ def weekofyear(self):
"time", "Timestamps corresponding to datetimes", object
)

date = Properties._tslib_field_accessor(
"date", "Date corresponding to datetimes", object
)

is_month_start = Properties._tslib_field_accessor(
"is_month_start",
"Indicates whether the date is the first day of the month.",
Expand Down