how to save every LIST in parallel as a fields and records to the txt file in a clear formatted way in python

Question

SS1=[(1, 2, 3, 4, 5), (1, 2, 3, 4, 6), (1, 2, 3, 5, 6), (1, 2, 4, 5, 6), (1, 3, 4, 5, 6), (2, 3, 4, 5, 6)]

SS2=[(1, 2, 3, 4), (1, 2, 3, 4), (1, 2, 3, 5), (1, 2, 4, 5), (1, 3, 4, 5), (2, 3, 4, 5)]

SS3=[(1, 2, 3), (1, 2, 3), (1, 2, 3), (1, 2, 4), (1, 3, 4), (2, 3, 4)]

I'm Writing my list into a file using the below codes...But when i write again it's adding to the last line of the file.

but what i want is....it should append horizontally not vertically. I mean must go like table and fields and records.

so, for the above ss1 the line of records is going to be 6 and for every save should add the values in parallel as table fields and records manner

ss1 ss2 ss3 1, 2, 3, 4, 5 1, 2, 3, 4 1, 2, 3

def write_to_txt(a, file_name, delimiter=','):
    with open(file_name, 'a') as f:
        for k in SS1:
            fmt = '%s' % delimiter
            f.write(fmt.join(map(str, k)) + '\n')

not only writing and help me to read it back to same number of lists based on it's number columns.

def read_from_txt(file_name):
    with open(file_name, 'r') as f:
        data = [tuple(map(int, k.split(','))) for k in f.read().splitlines()]
    return data

#write_to_txt(SS1, 'ABC.txt')
#data  = read_from_txt('ABC.txt')

Answer 1

This is a good first aproach:

SS1=[(1, 2, 3, 4, 5), (1, 2, 3, 4, 6), (1, 2, 3, 5, 6), (1, 2, 4, 5, 6), (1, 3, 4, 5, 6), (2, 3, 4, 5, 6)]

SS2=[(1, 2, 3, 4), (1, 2, 3, 4), (1, 2, 3, 5), (1, 2, 4, 5), (1, 3, 4, 5), (2, 3, 4, 5)]

SS3=[(1, 2, 3), (1, 2, 3), (1, 2, 3), (1, 2, 4), (1, 3, 4), (2, 3, 4)]

ALL = [SS1,SS2,SS3]

def write_to_txt(a, file_name, delimiter=','):
    with open(file_name, 'a') as f:
        for i, ss in enumerate(SS1):
            if i != 0:
                f.write("\n")
            for ss in ALL:
                fmt = '%s' % delimiter
                f.write(fmt.join(map(str, ss[i])) + ",")

write_to_txt("a","lines.txt")