Update apshceduler-3.8.0

lib/apscheduler/schedulers/asyncio.py

@@ -38,13 +38,19 @@ class AsyncIOScheduler(BaseScheduler):
     _eventloop = None
     _timeout = None
 
+    def start(self, paused=False):
+        if not self._eventloop:
+            self._eventloop = asyncio.get_event_loop()
+
+        super(AsyncIOScheduler, self).start(paused)
+
     @run_in_event_loop
     def shutdown(self, wait=True):
         super(AsyncIOScheduler, self).shutdown(wait)
         self._stop_timer()
 
     def _configure(self, config):
-        self._eventloop = maybe_ref(config.pop('event_loop', None)) or asyncio.get_event_loop()
+        self._eventloop = maybe_ref(config.pop('event_loop', None))
         super(AsyncIOScheduler, self)._configure(config)
 
     def _start_timer(self, wait_seconds):

lib/apscheduler/schedulers/background.py

@@ -29,7 +29,9 @@ class BackgroundScheduler(BlockingScheduler):
         super(BackgroundScheduler, self)._configure(config)
 
     def start(self, *args, **kwargs):
-        self._event = Event()
+        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

lib/apscheduler/schedulers/base.py

@@ -86,6 +86,11 @@ class BaseScheduler(six.with_metaclass(ABCMeta)):
         self.state = STATE_STOPPED
         self.configure(gconfig, **options)
 
+    def __getstate__(self):
+        raise TypeError("Schedulers cannot be serialized. Ensure that you are not passing a "
+                        "scheduler instance as an argument to a job, or scheduling an instance "
+                        "method where the instance contains a scheduler as an attribute.")
+
     def configure(self, gconfig={}, prefix='apscheduler.', **options):
         """
         Reconfigures the scheduler with the given options.
@@ -402,7 +407,7 @@ class BaseScheduler(six.with_metaclass(ABCMeta)):
         :param str|unicode id: explicit identifier for the job (for modifying it later)
         :param str|unicode name: textual description of the job
         :param int misfire_grace_time: seconds after the designated runtime that the job is still
-            allowed to be run
+            allowed to be run (or ``None`` to allow the job to run no matter how late it is)
         :param bool coalesce: run once instead of many times if the scheduler determines that the
             job should be run more than once in succession
         :param int max_instances: maximum number of concurrently running instances allowed for this

lib/apscheduler/schedulers/blocking.py

@@ -14,7 +14,9 @@ class BlockingScheduler(BaseScheduler):
     _event = None
 
     def start(self, *args, **kwargs):
-        self._event = Event()
+        if self._event is None or self._event.is_set():
+            self._event = Event()
+
         super(BlockingScheduler, self).start(*args, **kwargs)
         self._main_loop()
 

lib/apscheduler/schedulers/qt.py

@@ -9,9 +9,13 @@ except (ImportError, RuntimeError):  # pragma: nocover
         from PyQt4.QtCore import QObject, QTimer
     except ImportError:
         try:
-            from PySide.QtCore import QObject, QTimer  # noqa
+            from PySide2.QtCore import QObject, QTimer  # noqa
         except ImportError:
-            raise ImportError('QtScheduler requires either PyQt5, PyQt4 or PySide installed')
+            try:
+                from PySide.QtCore import QObject, QTimer  # noqa
+            except ImportError:
+                raise ImportError('QtScheduler requires either PyQt5, PyQt4, PySide2 '
+                                  'or PySide installed')
 
 
 class QtScheduler(BaseScheduler):