__author__ = 'k22li'

#import numpy as np

a = [1, 2, 3, 4]
b = [5, 6, 7, 8]

print a*2 # output:  [1, 2, 3, 4, 1, 2, 3, 4]  scalar operations for lists and element by element basis

print a+b # output:  [1, 2, 3, 4, 5, 6, 7, 8]

