Index entire array backwards in for loop

Question

Suppose I would like to loop over an array and within the loop index the array forward and backward for all of its indices like so:

x = np.random.uniform(siz         


        

Answer 1

Why don't you just use the length information:

length = len(x)

for i in range(length):
    dot = np.dot(x[:length-i], x[i:])