code sample for pandas-dev#39025

Author: simonjayhawkins

bisect/39025.py

@@ -0,0 +1,17 @@
+import numpy as np
+import pandas as pd
+
+print(pd.__version__)
+
+df = pd.DataFrame(
+    np.random.randn(1000, 3),
+    index=pd.date_range("1/1/2012", freq="S", periods=1000),
+    columns=[1, "foo", None],
+)
+r = df.resample("3T")
+
+try:
+    r.agg({2: "mean", "bar": "sum"})
+except pd.core.base.SpecificationError as err:
+    print(err)
+    pass