Fatal Python error: PyImport_GetModuleDict: no module dictionary

I have a script that makes calls to an API. In order to speed the script up I've tried to implement threading.

The script below works when I'm in IDLE, however when I try to run it with a sys argv from the command line I received two types of errors listed below.

Error 1

Fatal Python error: PyImport_GetModuleDict: no module dictionary!

This application has requests the Runtime to terminate it in an unusual way.  Please         contact the application's support team for more information.

Error 2

Exception in thread Thread-1 (most likely raised during iterpreter shutdown): 
Exception in thread Thread-2 (most likely raised during iterpreter shutdown):
Exception in thread Thread-3 (most likely raised during iterpreter shutdown):
Exception in thread Thread-5 (most likely raised during iterpreter shutdown):

I can't find anything on these errors. So, any help is appreciated. Below is the portion of the script that deals with threading.

import threading
import diffbot

urls = [[example.com],[example2.com]]
data = []

def getData(url):
        x = diffbot.classify(url)
    data.append(x)


def doWork(urls):
    for element in urls:
        for url in element:
            t = threading.Thread(target=getData, args=(url,))
            t.daemon = True
            t.start()

doWork(urls)