gistfile1.py

"""
I have a challenge for you:

 - Print "Hello World" using any language.
 - Each character must be printed from its own, unique thread

That's it. Obviously, as there's no guarantee that the threads will operate in the order you start them, you have to make your program thread safe to ensure the output is printed in the right order.

And, because this is code golf, the shortest program wins.
Source: http://codegolf.stackexchange.com/questions/5871/helolw-rdlo-a-threading-challenge
"""

# Ok. First we patch Threading.start to point out that the only
# python answer so far is utterly wrong

import threading
import random, time
original_run = threading.Thread.run


def myRun(self):
	tosleep = random.randint(0,200)/1000.0
	time.sleep(tosleep)
	original_run(self)

threading.Thread.run = myRun

# And now the utterly wrong code:

import sys,threading as t
for x in "Hello World":t.Thread(None,sys.stdout.write,x,x).start()

# On my machine produced:
dle loHoWrl
llHroW leod
lllW eordHo
# etc etc