pr-sample

rupa jha rocks!

omkar issue file exists. this is 4th branch

slicing

import nmupy as np

arr= np.array([1,2,3,4,,5],[6,7,8,9,10]) print=(arr,[0:1:3] + arr [1:2:4])

print=(arr,[0:1:3] - arr [1:2:4])

print([0:1:4])