code sample for pandas-dev#46512

Author: simonjayhawkins

bisect/46512.py

@@ -0,0 +1,14 @@
+# BUG: Inconsistency in DataFrame.where between inplace and not inplace with na like value
+# for StringArray #46512
+
+import numpy as np
+import pandas as pd
+
+print(pd.__version__)
+
+df = pd.DataFrame({"A": ["1", "", "3"]}, dtype="string")
+df.where(df != "", np.nan, inplace=True)
+print(df)
+arr = df["A"]._values
+print(arr)
+assert arr[1] is pd.NA, type(arr[1])