code sample for pandas-dev#46704

Author: simonjayhawkins

bisect/46704.py

@@ -0,0 +1,15 @@
+# BUG: loc with MultiIndex as index is returning incorrect Index #46704
+
+import pandas as pd
+
+print(pd.__version__)
+
+s = pd.DataFrame({"a": [1, 1, 2], "b": [1, 2, 3], "c": ["a", "b", "c"]}).set_index(
+    ["a", "b"]
+)["c"]
+
+result = s.loc[(1, slice(None))]
+print(result)
+
+expected = s.iloc[:2]
+pd.testing.assert_series_equal(result, expected)