created a custom class that allows subprocesses to spawn other subpro…

…cesses

src/webqueue2api/parser/queue.py

@@ -1,4 +1,5 @@
 import multiprocessing
+import multiprocessing.pool
 import os, re
 from pathlib import Path
 from .item import Item
@@ -198,6 +199,20 @@ def load_queues(*queues, headers_only: bool = True) -> list:
     Returns:
         list: A list of all the queues that were given as arguments, or all of the queues if no queues were specified
     """
+    # custom class creation based on stackoverflow answer
+    class NoDaemonProcess(multiprocessing.Process):
+        # make 'daemon' attribute always return False
+        def _get_daemon(self):
+            return False
+        def _set_daemon(self, value):
+            pass
+        daemon = property(_get_daemon, _set_daemon)
+
+    # We sub-class multiprocessing.pool.Pool instead of multiprocessing.Pool
+    # because the latter is only a wrapper function, not a proper class.
+    class MyPool(multiprocessing.pool.Pool):
+        Process = NoDaemonProcess
+
     queues = []
 
     for queue in get_valid_queues():