>>> df2 = pd.DataFrame(np.array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]), ... columns=['a', 'b', 'c']) >>> df2 a b c 0 1 2 3 1 4 5 6 2 7 8 9
df = pd.DataFrame({'column1':[1,2,3],'column2':[4,5,6])