Updated script that can be controled by Nodejs web app

lib/python3.13/site-packages/pandas/tests/indexes/period/test_pickle.py

@@ -0,0 +1,26 @@
+import numpy as np
+import pytest
+
+from pandas import (
+    NaT,
+    PeriodIndex,
+    period_range,
+)
+import pandas._testing as tm
+
+from pandas.tseries import offsets
+
+
+class TestPickle:
+    @pytest.mark.parametrize("freq", ["D", "M", "Y"])
+    def test_pickle_round_trip(self, freq):
+        idx = PeriodIndex(["2016-05-16", "NaT", NaT, np.nan], freq=freq)
+        result = tm.round_trip_pickle(idx)
+        tm.assert_index_equal(result, idx)
+
+    def test_pickle_freq(self):
+        # GH#2891
+        prng = period_range("1/1/2011", "1/1/2012", freq="M")
+        new_prng = tm.round_trip_pickle(prng)
+        assert new_prng.freq == offsets.MonthEnd()
+        assert new_prng.freqstr == "M"