Can thread start other threads?

[John Henry]

Can Python thread start threads? It appears not. When I do that, the
sub-threads gets to certain point and just sit there. If I run the
code serially and not run the sub-thread code as threads, everything is
fine.

I throught the problem is when you run multiple processes of Pythons...

[Diez B. Roggisch]

Re: Can thread start other threads?

John Henry schrieb:

Can Python thread start threads? It appears not. When I do that, the
sub-threads gets to certain point and just sit there. If I run the
code serially and not run the sub-thread code as threads, everything is
fine.

It can.

import threading, time


class Test(threading. Thread):
def __init__(self, num):
threading.Threa d.__init__(self )
self._num = num
self.setDaemon( True)
self.start()

def run(self):
if self._num 0:
t = Test(self._num - 1)
while True:
time.sleep(.2)
print "T_%i" % self._num


t = Test(4)

while True:
time.sleep(2.0)

I throught the problem is when you run multiple processes of Pythons...

No.

Whatever you do, it must be the cause. Without code - nobody can tell
you why.

Diez

[John Henry]

Re: Can thread start other threads?

Thanks for the confirmation.

I will see if I can reduce the code down to something managable and
post the failing code.



Diez B. Roggisch wrote:

John Henry schrieb:

Can Python thread start threads? It appears not. When I do that, the
sub-threads gets to certain point and just sit there. If I run the
code serially and not run the sub-thread code as threads, everything is
fine.

>
It can.
>
import threading, time
>
>
class Test(threading. Thread):
def __init__(self, num):
threading.Threa d.__init__(self )
self._num = num
self.setDaemon( True)
self.start()
>
def run(self):
if self._num 0:
t = Test(self._num - 1)
while True:
time.sleep(.2)
print "T_%i" % self._num
>
>
t = Test(4)
>
while True:
time.sleep(2.0)
>
>

I throught the problem is when you run multiple processes of Pythons...

>
>
No.
>
Whatever you do, it must be the cause. Without code - nobody can tell
you why.
>
Diez