CSV in Python adding an extra carriage return, on Windows

Question

import csv
outfile = file(\'test.csv\', \'w\')
writer = csv.writer(outfile, delimiter=\',\', quoting=csv.QUOTE_MINIMAL)
writer.writerow([\'hi\',\'dude\'])
writer.wri         


        

Answer 1

In Python 3 (I haven't tried this in Python 2), you can also simply do

with open('output.csv','w',newline='') as f:
    writer=csv.writer(f)
    writer.writerow(mystuff)
    ...

as per documentation.

More on this in the doc's footnote:

If newline='' is not specified, newlines embedded inside quoted fields will not be interpreted correctly, and on platforms that use \r\n linendings on write an extra \r will be added. It should always be safe to specify newline='', since the csv module does its own (universal) newline handling.