code sample for pandas-dev#42921

Author: simonjayhawkins

bisect/42921.py

@@ -0,0 +1,12 @@
+# BUG: Reindex null timedelta series with pd.Timedelta fails #42921
+
+import pandas as pd
+
+print(pd.__version__)
+
+ts = pd.date_range("2020-01-01", "2020-01-03", freq="1d")
+s = pd.Series(pd.Timedelta(None), index=ts)
+result = s.reindex(
+    pd.date_range("2020-01-01", "2020-01-04", freq="1d"), fill_value=pd.Timedelta(0)
+)
+print(result)