portable way to write csv file in python 2 or python 3

Question

On my Windows box, I usually did this in python 2 to write a csv file:

import csv
f = open(\"out.csv\",\"wb\")
cr = csv.writer(f,delimiter=\';\')
cr.writerow         


        

Answer 1

On Windows, I found a python 2 & 3 compliant way of doing it changing csv lineterminator option (which defaults to "\r\n" which makes one \r too many when file is open in text mode in Windows)

import csv

with open("out.csv","w") as f:
    cr = csv.writer(f,delimiter=";",lineterminator="\n")
    cr.writerow(["a","b","c"])
    cr.writerow(["d","e","f"])
    cr.writerow(["a","b","c"])
    cr.writerow(["d","e","f"])

Whatever the python version, that will create a csv file without the infamous "blank lines".

The only drawback is that on Linux, this method would produce \r-free files, which is maybe not the standard (although files still opens properly in excel, no blank lines and still several lines :))

the problem persists on 3.6.2 (Just checked myself like I should have some time ago)