Scalar/Linear Transformation

import pandas as pd
x_list = [1, 2, 3, 4, 5]
x_array = pd.Series([1,2,3,4,5])
print( x_list * 3, "\n", x_array * 3) 
[1, 2, 3, 4, 5, 1, 2, 3, 4, 5, 1, 2, 3, 4, 5] 
 0     3
1     6
2     9
3    12
4    15
dtype: int64