Error report “not enough values to unpack (expected 5, got 1)

Hey guys! I wrote my python code to generate a batch of Radom numbers and calculate the mean of each batch. But it reports “not enough values to unpack (expected 5, got 1). There are also some functions reading the data, filter the data. I think there is perhaps something wrong in my functions and generated data file. I am attaching all the files of py format.