如何从文件读取不同的度量并保存？

Question

I have few csv files that all of the has the following information:

I need to take each row from every CSV files and add as a row in each different Label separately to be able to take the mean of all measures among all CSV files. I wrote the following lines, but I do not know how to write in an efficient and clean way. defining 6 different numpy arrays and then adding each row of csv to them separately does not seem a smart way of writing code. what do you suggest? Thanks

for filename in csv_files:
     print 'reading CSV file '+ filename
     file_path=join(csv_dir, filename)
     csv = np.genfromtxt (file_path, delimiter=",")

Answer 1

As in the comment: Read each file into a numpy.ndarray and store them into a list. Afterwards stack them together, eg with np.hstack(arraylist).