code sample for pandas-dev#47294

Author: simonjayhawkins

bisect/47294.py

@@ -0,0 +1,17 @@
+# BUG: uint16 inserted as int16 when assigning row with dict #47294
+
+import pandas as pd
+import numpy as np
+
+print(pd.__version__)
+
+df = pd.DataFrame(columns=["actual", "reference"])
+df.loc[0] = {"actual": np.uint16(40_000), "reference": "nope"}
+
+print(df)
+print(df.dtypes)
+
+expected = pd.DataFrame(
+    {"actual": [np.uint16(40_000)], "reference": ["nope"]}, dtype=object
+)
+pd.testing.assert_frame_equal(df, expected)