Make threads that return values in python

gistfile1.txt

import threading


class ThreadFunction(threading.Thread):
    def __init__(self, group=None, target=None, name=None,
                 args=(), kwargs={}, Verbose=None):
        self._return = None
        super(ThreadFunction, self).__init__(group, self._wrap(target),
                                  name, args, kwargs, Verbose)

    def _wrap(self, f):
        def g(*args, **kwargs):
            self._return = f(*args, **kwargs)
        return g

    def join(self):
        super(ThreadFunction, self).join()
        return self._return

>>> from thread_function import ThreadFunction
>>> def f(x):
...     return x
... 
>>> t1 = ThreadFunction(target=f, args=(1,))
>>> t1.start()
>>> t2 = ThreadFunction(target=f, args=(2,))
>>> t2.start()
>>> t1.join()
1
>>> t2.join()
2