Added the APscheduler 3.9.1 source into the Linspector source tree.

apscheduler/schedulers/background.py

@@ -0,0 +1,43 @@
+from __future__ import absolute_import
+
+from threading import Thread, Event
+
+from apscheduler.schedulers.base import BaseScheduler
+from apscheduler.schedulers.blocking import BlockingScheduler
+from apscheduler.util import asbool
+
+
+class BackgroundScheduler(BlockingScheduler):
+    """
+    A scheduler that runs in the background using a separate thread
+    (:meth:`~apscheduler.schedulers.base.BaseScheduler.start` will return immediately).
+
+    Extra options:
+
+    ========== =============================================================================
+    ``daemon`` Set the ``daemon`` option in the background thread (defaults to ``True``, see
+               `the documentation
+               <https://docs.python.org/3.4/library/threading.html#thread-objects>`_
+               for further details)
+    ========== =============================================================================
+    """
+
+    _thread = None
+
+    def _configure(self, config):
+        self._daemon = asbool(config.pop('daemon', True))
+        super(BackgroundScheduler, self)._configure(config)
+
+    def start(self, *args, **kwargs):
+        if self._event is None or self._event.is_set():
+            self._event = Event()
+
+        BaseScheduler.start(self, *args, **kwargs)
+        self._thread = Thread(target=self._main_loop, name='APScheduler')
+        self._thread.daemon = self._daemon
+        self._thread.start()
+
+    def shutdown(self, *args, **kwargs):
+        super(BackgroundScheduler, self).shutdown(*args, **kwargs)
+        self._thread.join()
+        del self._thread