from random import random

def func(in_vals):
    '''result = x (+y+z+w....)'''
    result = 0
    for v in in_vals:
        result += v
    return result

if __name__ == "__main__":
    entry_count = 1000
    dim_count = 2
    in_vals = [0]*dim_count
    with open("data_yequalsx.csv", "w") as out_file:
        for entry in range(entry_count):
            for i in range(dim_count):
                in_vals[i] = random()
            out_val = func(in_vals)
            out_file.write(','.join([str(x) for x in in_vals]))
            out_file.write(",%s\n" % str(out_val))