Update dhcp.py

[vitormhenrique]

Fix issue where DelayWorker would keep the server from closing if the queue is empty (issue #7).

[niccokunzmann]

If the queue is empty, this leads to a while loop which powers through. I think, we can use an else: here which sleeps for 0.01 seconds.

[niccokunzmann]

Would you like to add that?

[greggzj]

Hello, great thanks for your great library.
Just have two points for this ISSUE( though it already closed)

1. what if using EAFP! style and adding timeout=1 rather than using LBYL style and directly continue the while loop without any delaying or sleep?
   The updated code will look like this:

try:
                p = self.queue.get(timeout=1)
                if self.closed:
                    break
                t, func, args, kw = p
                now = time.time()
                if now < t:
                    time.sleep(0.01)
                    self.queue.put(p)
                else:
                    func(*args, **kw)
            except queue.Empty:
                continue

2. Do you think new release should be issued? I download the latest RELEASE version seems do not contain this fix

What do you think? Thanks in advance

[niccokunzmann]

Hi @greggzj, (1) you can open a pull request with the changes you would like to see and we can discuss them there.
(2) I also think that this fix is not yet in a new release. However, it is in the master branch which you can download, too. Yep, I make a new release.

[greggzj]

Thanks, I will create a pull request later. Also thanks for the new release

[niccokunzmann]

Thanks for taking care of issue #7.