code sample for pandas-dev#38900

simonjayhawkins · simonjayhawkins · commit 7912621cded2 · 2021-01-06T13:11:05.000Z
diff --git a/bisect/38900.py b/bisect/38900.py
@@ -0,0 +1,12 @@
+import numpy as np
+import pandas as pd
+
+print(pd.__version__)
+
+df = pd.DataFrame(["o", "o'doul's", "oad", "oaf", "oafish"])
+df = df.astype("|S")
+print(df)
+
+print(df.dtypes)
+
+df.replace({None: np.nan})
