python's threading has no "interrupt"?

[MetalOne]

You might be able to solve your problem a couple of ways.
A sample scenario might be than you are using
a condition variable and are blocked in
cv.wait().  The user selects "exit" from a menu and you would like to
interrupt the cv.wait() so that the program may exit.

while not cond():
    cv.wait()
processData()

These lines of code require another thread to modify the condition and
call cv.notifyAll()

The cond() function could be modified
def cond():
    return origCond() and exitSelected


Alternatively a semaphore could be used.
s = Semaphore(2)
on startup
s.acquire()  #This one will be released upon selecting "exit".

later on
s.acquire() #This consumes a slot and continues or waits for an
available slot.
processData()

on "exit" calling s.release() will wake up the above code.

Finally, since both of these ideas may be a bit of a headache you
might find
setting Thread.setDaemon(True) to be useful.  This allows your program
to terminate when the main thread terminates even if other threads are
running.