Python multiprocessing: TypeError: expected string or Unicode object, NoneType found

Question

I am attempting to download a whole ftp directory in parallel.

#!/usr/bin/python
import sys
import datetime
import os
from multiprocessing import Process, Po         


        

Answer 1

Have you tried:

pool.apply_async(downloadFile, args=(filename,local_filename,ftp))

The prototype is :

apply_async(func, args=(), kwds={}, callback=None)