wiso wrote:
I took a little code from google tech talk. It seems interesting, but it
doesn't work:
import sys, urllib, os, threading, Queue
q = Queue.Queue()
class RetrWorker(threading.Thread):
def run(self):
self.setDaemon(True)
def hook(*a): print (fn,a)
while True:
url = q.get()
fn = os.path.basename(url)
print url, "->", fn
urllib.urlretrive(url, fn, hook)
for i in range(10): RetrWorker().start()
for url in sys.argv[1:]: q.put(url)
Exception in thread Thread-10:
Traceback (most recent call last):
File "/usr/lib64/python2.6/threading.py", line 522, in __bootstrap_inner
self.run()
File "wget_m.py", line 7, in run
self.setDaemon(True)
File "/usr/lib64/python2.6/threading.py", line 690, in setDaemon
self.daemon = daemonic
File "/usr/lib64/python2.6/threading.py", line 683, in daemon
raise RuntimeError("cannot set daemon status of active thread");
RuntimeError: cannot set daemon status of active thread
The traceback explains why.
self.setDaemon(True) is in the 'run' method, which is called when the
thread starts (becomes active), but you're not allowed to turn the
thread into a daemon after it has started.
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