Deprecated Series.ftype, Series.ftypes and DataFrame.ftypes features

pandas/core/generic.py

@@ -5525,6 +5525,9 @@ def ftypes(self):
         """
         Return the ftypes (indication of sparse/dense and dtype) in DataFrame.
 
+        .. deprecated:: 0.25.0
+           Use :func:`dtypes` instead.
+
         This returns a Series with the data type of each column.
         The result's index is the original DataFrame's columns. Columns
         with mixed types are stored with the ``object`` dtype.  See
@@ -5562,6 +5565,11 @@ def ftypes(self):
         3    float64:sparse
         dtype: object
         """
+        warnings.warn("ftypes is deprecated and will "
+                      "be removed in a future version. "
+                      "Use dtypes instead.",
+                      FutureWarning, stacklevel=2)
+
         from pandas import Series
         return Series(self._data.get_ftypes(), index=self._info_axis,
                       dtype=np.object_)

pandas/core/series.py

@@ -419,14 +419,30 @@ def dtypes(self):
     def ftype(self):
         """
         Return if the data is sparse|dense.
+
+        .. deprecated:: 0.25.0
+           Use :func:`dtype` instead.
         """
+        warnings.warn("ftype is deprecated and will "
+                      "be removed in a future version. "
+                      "Use dtype instead.",
+                      FutureWarning, stacklevel=2)
+
         return self._data.ftype
 
     @property
     def ftypes(self):
         """
         Return if the data is sparse|dense.
+
+        .. deprecated:: 0.25.0
+           Use :func:`dtypes` instead.
         """
+        warnings.warn("ftypes is deprecated and will "
+                      "be removed in a future version. "
+                      "Use dtypes instead.",
+                      FutureWarning, stacklevel=2)
+
         return self._data.ftype
 
     @property

pandas/tests/frame/test_dtypes.py

@@ -402,7 +402,8 @@ def test_ftypes(self):
                                B='float32:dense',
                                C='float16:dense',
                                D='float64:dense')).sort_values()
-        result = frame.ftypes.sort_values()
+        with tm.assert_produces_warning(FutureWarning):
+            result = frame.ftypes.sort_values()
         assert_series_equal(result, expected)
 
     def test_astype(self):

pandas/tests/series/test_dtypes.py

@@ -48,8 +48,10 @@ def test_dtype(self, datetime_series):
 
         assert datetime_series.dtype == np.dtype('float64')
         assert datetime_series.dtypes == np.dtype('float64')
-        assert datetime_series.ftype == 'float64:dense'
-        assert datetime_series.ftypes == 'float64:dense'
+        with tm.assert_produces_warning(FutureWarning):
+            assert datetime_series.ftype == 'float64:dense'
+        with tm.assert_produces_warning(FutureWarning):
+            assert datetime_series.ftypes == 'float64:dense'
         tm.assert_series_equal(datetime_series.get_dtype_counts(),
                                Series(1, ['float64']))
         # GH18243 - Assert .get_ftype_counts is deprecated