code sample for pandas-dev#42719

Author: simonjayhawkins

bisect/42719.py

@@ -0,0 +1,16 @@
+# BUG: TypeError when shifting DataFrame created by concatenation of slices and fills with values #42719
+
+import numpy as np
+import pandas as pd
+
+print(pd.__version__)
+
+npa = np.random.RandomState(0).randint(1000, size=(20, 8))
+df = pd.DataFrame(npa, columns=[f"c{i}" for i in range(8)])
+
+df1 = df.iloc[:6, 3:5]
+df2 = df.iloc[:6, 6:8]
+df = pd.concat([df1, df2], axis=1)
+
+result = df.shift(periods=2, axis=1, freq=None, fill_value=0)
+print(result)