CLN: move _na_value to DatetimeIndexOpsMixin (#13997)

Author: sinhrks

pandas/tseries/base.py

@@ -353,6 +353,9 @@ def get_duplicates(self):
  values = Index.get_duplicates(self)
  return self._simple_new(values)
 
+ _na_value = tslib.NaT
+ """The expected NA value to use with this index."""
+
  @cache_readonly
  def _isnan(self):
  """ return if each value is nan"""

pandas/tseries/index.py

@@ -667,9 +667,6 @@ def _mpl_repr(self):
  # how to represent ourselves to matplotlib
  return tslib.ints_to_pydatetime(self.asi8, self.tz)
 
- _na_value = tslib.NaT
- """The expected NA value to use with this index."""
-
  @cache_readonly
  def _is_dates_only(self):
  from pandas.formats.format import _is_dates_only

pandas/tseries/period.py

@@ -320,10 +320,6 @@ def _coerce_scalar_to_index(self, item):
  """
  return PeriodIndex([item], **self._get_attributes_dict())
 
- @property
- def _na_value(self):
- return self._box_func(tslib.iNaT)
-
  def __contains__(self, key):
  if isinstance(key, Period):
  if key.freq != self.freq:

pandas/tseries/tdi.py

@@ -282,9 +282,6 @@ def _simple_new(cls, values, name=None, freq=None, **kwargs):
  result._reset_identity()
  return result
 
- _na_value = tslib.NaT
- """The expected NA value to use with this index."""
-
  @property
  def _formatter_func(self):
  from pandas.formats.format import _get_format_timedelta64

pandas/tseries/tests/test_base.py

@@ -798,6 +798,10 @@ def test_shift(self):
  '2011-01-01 09:00'], name='xxx', tz=tz)
  tm.assert_index_equal(idx.shift(-3, freq='H'), exp)
 
+ def test_na_value(self):
+ self.assertIs(pd.DatetimeIndex._na_value, pd.NaT)
+ self.assertIs(pd.DatetimeIndex([])._na_value, pd.NaT)
+
 
 class TestTimedeltaIndexOps(Ops):
  def setUp(self):
@@ -1641,6 +1645,10 @@ def test_repeat(self):
  tm.assert_index_equal(res, exp)
  self.assertIsNone(res.freq)
 
+ def test_na_value(self):
+ self.assertIs(pd.TimedeltaIndex._na_value, pd.NaT)
+ self.assertIs(pd.TimedeltaIndex([])._na_value, pd.NaT)
+
 
 class TestPeriodIndexOps(Ops):
  def setUp(self):
@@ -2581,6 +2589,10 @@ def test_repeat(self):
  for res in [index.repeat(3), np.repeat(index, 3)]:
  tm.assert_index_equal(res, exp)
 
+ def test_na_value(self):
+ self.assertIs(pd.PeriodIndex._na_value, pd.NaT)
+ self.assertIs(pd.PeriodIndex([], freq='M')._na_value, pd.NaT)
+
 
 if __name__ == '__main__':
  import nose