revert some removals

Author: jbrockmendel

pandas/core/indexes/datetimes.py

@@ -373,6 +373,27 @@ def tz(self, value):
         raise AttributeError("Cannot directly set timezone. Use tz_localize() "
                              "or tz_convert() as appropriate")
 
+    @property
+    def size(self):
+        # TODO: Remove this when we have a DatetimeTZArray
+        # Necessary to avoid recursion error since DTI._values is a DTI
+        # for TZ-aware
+        return self._ndarray_values.size
+
+    @property
+    def shape(self):
+        # TODO: Remove this when we have a DatetimeTZArray
+        # Necessary to avoid recursion error since DTI._values is a DTI
+        # for TZ-aware
+        return self._ndarray_values.shape
+
+    @property
+    def nbytes(self):
+        # TODO: Remove this when we have a DatetimeTZArray
+        # Necessary to avoid recursion error since DTI._values is a DTI
+        # for TZ-aware
+        return self._ndarray_values.nbytes
+
     def _mpl_repr(self):
         # how to represent ourselves to matplotlib
         return libts.ints_to_pydatetime(self.asi8, self.tz)

pandas/core/indexes/period.py

@@ -312,6 +312,16 @@ def __array_wrap__(self, result, context=None):
         # cannot pass _simple_new as it is
         return self._shallow_copy(result, freq=self.freq, name=self.name)
 
+    @property
+    def size(self):
+        # Avoid materializing self._values
+        return self._ndarray_values.size
+
+    @property
+    def shape(self):
+        # Avoid materializing self._values
+        return self._ndarray_values.shape
+
     @property
     def _formatter_func(self):
         return lambda x: "'%s'" % x