Raise error when pd.periodIndex is passed to the column constructor (…

…#4)

Fixes: #14148

This PR resolves a RunTimeError by raising when a pd.PeriodIndex is passed to the column constructor, the reason being there is no cudf.PeriodIndex implemented yet.

python/cudf/cudf/core/column/column.py

@@ -2056,6 +2056,10 @@ def as_column(
             data = as_column(
                 cupy.asarray(arbitrary), nan_as_null=nan_as_null, dtype=dtype
             )
+        elif isinstance(arbitrary.dtype, pd.PeriodDtype):
+            raise NotImplementedError(
+                "cuDF does not yet support `PeriodDtype`"
+            )
         else:
             pyarrow_array = pa.array(arbitrary, from_pandas=nan_as_null)
             if arbitrary.dtype == cudf.dtype("object") and cudf.dtype(
@@ -2286,6 +2290,12 @@ def as_column(
         raise NotImplementedError(
             "cuDF does not yet support timezone-aware datetimes"
         )
+    elif isinstance(
+        arbitrary, (pd.core.arrays.period.PeriodArray, pd.PeriodIndex)
+    ):
+        raise NotImplementedError(
+            f"cuDF does not yet support {type(arbitrary).__name__}"
+        )
     elif (
         cudf.get_option("mode.pandas_compatible")
         and isinstance(arbitrary, (pd.DatetimeIndex, pd.TimedeltaIndex))

python/cudf/cudf/tests/test_index.py

@@ -2804,3 +2804,17 @@ def test_index_to_frame(data, data_name, index, name):
         actual = gidx.to_frame(index=index, name=name)
 
     assert_eq(expected, actual)
+
+
+def test_period_index_error():
+    pidx = pd.PeriodIndex(year=[2000, 2002], quarter=[1, 3])
+    with pytest.raises(NotImplementedError):
+        cudf.from_pandas(pidx)
+    with pytest.raises(NotImplementedError):
+        cudf.Index(pidx)
+    with pytest.raises(NotImplementedError):
+        cudf.Series(pidx)
+    with pytest.raises(NotImplementedError):
+        cudf.Series(pd.Series(pidx))
+    with pytest.raises(NotImplementedError):
+        cudf.Series(pd.array(pidx))