diff --git a/pylot/core/util/thread.py b/pylot/core/util/thread.py
index 849e18b6..f3cfce2e 100644
--- a/pylot/core/util/thread.py
+++ b/pylot/core/util/thread.py
@@ -1,9 +1,6 @@
 # -*- coding: utf-8 -*-
+import sys, os, traceback
 import multiprocessing
-import os
-import sys
-import traceback
-
 from PySide.QtCore import QThread, Signal, Qt, Slot, QRunnable, QObject
 from PySide.QtGui import QDialog, QProgressBar, QLabel, QHBoxLayout, QPushButton
 
@@ -73,9 +70,6 @@ class Thread(QThread):
             print('Exception: {}, file: {}, line: {}'.format(exc_type, fname, exc_tb.tb_lineno))
         sys.stdout = sys.__stdout__
 
-    def __del__(self):
-        self.wait()
-
     def showProgressbar(self):
         if self.progressText:
 
@@ -112,7 +106,6 @@ class Worker(QRunnable):
     '''
 
     '''
-
     def __init__(self, fun, args,
                  progressText=None,
                  pb_widget=None,
@@ -120,7 +113,7 @@ class Worker(QRunnable):
         super(Worker, self).__init__()
         self.fun = fun
         self.args = args
-        # self.kwargs = kwargs
+        #self.kwargs = kwargs
         self.signals = WorkerSignals()
         self.progressText = progressText
         self.pb_widget = pb_widget
@@ -135,9 +128,9 @@ class Worker(QRunnable):
             result = self.fun(self.args)
         except:
             traceback.print_exc()
-            exctype, value = sys.exc_info()[:2]
+            exctype, value = sys.exc_info ()[:2]
             print(exctype, value, traceback.format_exc())
-            # self.signals.error.emit ((exctype, value, traceback.format_exc ()))
+            #self.signals.error.emit ((exctype, value, traceback.format_exc ()))
         else:
             self.signals.result.emit(result)
         finally:
@@ -177,13 +170,13 @@ class MultiThread(QThread):
 
     def run(self):
         if self.redirect_stdout:
-            sys.stdout = self
+             sys.stdout = self
         try:
             if not self.ncores:
                 self.ncores = multiprocessing.cpu_count()
             pool = multiprocessing.Pool(self.ncores)
             self.data = pool.map_async(self.func, self.args, callback=self.emitDone)
-            # self.data = pool.apply_async(self.func, self.shotlist, callback=self.emitDone) #emit each time returned
+            #self.data = pool.apply_async(self.func, self.shotlist, callback=self.emitDone) #emit each time returned
             pool.close()
             self._executed = True
         except Exception as e:
@@ -194,9 +187,6 @@ class MultiThread(QThread):
             print('Exception: {}, file: {}, line: {}'.format(exc_type, fname, exc_tb.tb_lineno))
         sys.stdout = sys.__stdout__
 
-    def __del__(self):
-        self.wait()
-
     def showProgressbar(self):
         if self.progressText:
             if not self.pb_widget: