Pyinstaller doesn't work properly with threading.Thread module

[jackson@jacksonc.com]

A program that scans wifi networks using the threading.Thread module doesn't work, so I stripped the program down until I found where execution wasn't as expected. And it seems that things go weird when they enter the threading.Thread.run() method. After building the following code...

import threading

class TestThreadClass(threading.Thread):
	def __init__(self):
		threading.Thread.__init__(self)

	def run(self):
		print 'ONE'
		print 'TWO'
		print 'THREE'

TestThreadClass().start()

When executed from the terminal in Ubuntu 10.04 and Python 2.6.5 it consistently prints "ONE\nTWO\nTHREE". But when built with PyInstaller? (latest SVN as of 7th May), if I run the program over and over I get different output every time.

eg...

jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
ONE

TWO
THREE
jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
ONEjackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
ONE

TWO
jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
ONE

jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
ONE

jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
ONE

TWO
jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ ./test-obscure-bug 
jackson@jackson-laptop:~/Desktop/obscure-bug/dist/test-obscure-bug$ 

[jkz88]

Oh, and I tried replacing the statements with...

sys.stdout.write('ONE\n')
sys.stdout.flush()
sys.stdout.write('TWO\n')
sys.stdout.flush()
sys.stdout.write('THREE\n')
sys.stdout.flush()

so stdout's buffer continually gets flushed, but it doesn't make any difference.

[giovannibajo]

There must be something missing in the bootloader, in the cleanup process.

Workaround is to call thread.join() in your main.