I have collected a list of lists, each list representing data from a single day. I need to find the SUM of these to calculate the total volume each day. I can only seem to add together each list, not an individual lists data. Provides the total of all the lists, not each individual lists total. for ele in range(0, len(y_pred)): total = total + y_pred[ele] print (total) Expected 18 outputs, each lists sum, not one output with a sum of everything. Continue reading...