Format files with black

- Format all files with black
- Update tox.ini flake8 arguments to be compatible
- Add black to requirements-extra.txt
- Reduce ignored flake8 rules and fix a few violations

hscommon/jobprogress/performer.py

@@ -1,9 +1,9 @@
 # Created By: Virgil Dupras
 # Created On: 2010-11-19
 # Copyright 2011 Hardcoded Software (http://www.hardcoded.net)
-# 
-# This software is licensed under the "GPLv3" License as described in the "LICENSE" file, 
-# which should be included with this package. The terms are also available at 
+#
+# This software is licensed under the "GPLv3" License as described in the "LICENSE" file,
+# which should be included with this package. The terms are also available at
 # http://www.gnu.org/licenses/gpl-3.0.html
 
 from threading import Thread
@@ -11,29 +11,31 @@ import sys
 
 from .job import Job, JobInProgressError, JobCancelled
 
+
 class ThreadedJobPerformer:
     """Run threaded jobs and track progress.
-    
-    To run a threaded job, first create a job with _create_job(), then call _run_threaded(), with 
+
+    To run a threaded job, first create a job with _create_job(), then call _run_threaded(), with
     your work function as a parameter.
-        
+
     Example:
-        
+
     j = self._create_job()
     self._run_threaded(self.some_work_func, (arg1, arg2, j))
     """
+
     _job_running = False
     last_error = None
-    
-    #--- Protected
+
+    # --- Protected
     def create_job(self):
         if self._job_running:
             raise JobInProgressError()
         self.last_progress = -1
-        self.last_desc = ''
+        self.last_desc = ""
         self.job_cancelled = False
         return Job(1, self._update_progress)
-    
+
     def _async_run(self, *args):
         target = args[0]
         args = tuple(args[1:])
@@ -49,24 +51,23 @@ class ThreadedJobPerformer:
         finally:
             self._job_running = False
             self.last_progress = None
-    
+
     def reraise_if_error(self):
         """Reraises the error that happened in the thread if any.
-        
+
         Call this after the caller of run_threaded detected that self._job_running returned to False
         """
         if self.last_error is not None:
             raise self.last_error.with_traceback(self.last_traceback)
-    
-    def _update_progress(self, newprogress, newdesc=''):
+
+    def _update_progress(self, newprogress, newdesc=""):
         self.last_progress = newprogress
         if newdesc:
             self.last_desc = newdesc
         return not self.job_cancelled
-    
+
     def run_threaded(self, target, args=()):
         if self._job_running:
             raise JobInProgressError()
-        args = (target, ) + args
+        args = (target,) + args
         Thread(target=self._async_run, args=args).start()
-