diff --git a/addie/calculate_gr/event_handler.py b/addie/calculate_gr/event_handler.py
index 97fc7367..fc19e0b3 100644
--- a/addie/calculate_gr/event_handler.py
+++ b/addie/calculate_gr/event_handler.py
@@ -21,7 +21,7 @@ def check_widgets_status(main_window, enable_gr_widgets=False):
 
     sofq_widgets_status(main_window, sofq_status)
     gr_widgets_status(main_window, gr_status)
-    _tree_ui = main_window.calculategr_ui.frame_treeWidget_grWsList.children()[1]
+    #_tree_ui = main_window.calculategr_ui.frame_treeWidget_grWsList.children()[1]
 
 
 def sofq_widgets_status(main_window, sofq_status):
diff --git a/addie/calculate_gr/gofrtree.py b/addie/calculate_gr/gofrtree.py
index f19968ab..e46e526e 100644
--- a/addie/calculate_gr/gofrtree.py
+++ b/addie/calculate_gr/gofrtree.py
@@ -609,13 +609,6 @@ def check_widgets_status(self):
         is_sofq_empty = self.is_sofq_empty()
         sofq_widgets_status(self.parent, not is_sofq_empty)
 
-
-
-
-
-
-
-
     def _delete_main_node(self, node_item):
         """
         Delete a main node
diff --git a/addie/calculate_gr/save_sq_dialog_message.py b/addie/calculate_gr/save_sq_dialog_message.py
index c645f60f..5f7859f8 100644
--- a/addie/calculate_gr/save_sq_dialog_message.py
+++ b/addie/calculate_gr/save_sq_dialog_message.py
@@ -15,5 +15,3 @@ def __init__(self, main_window=None):
 
     def init_widgets(self):
         self.ui.message_label.setPixmap(QtGui.QPixmap(":/preview/save_sq_selection_image.png"))
-
-
diff --git a/addie/processing/mantid/master_table/align_and_focus_args.py b/addie/processing/mantid/master_table/align_and_focus_args.py
index 74c311d4..c96ba1e0 100644
--- a/addie/processing/mantid/master_table/align_and_focus_args.py
+++ b/addie/processing/mantid/master_table/align_and_focus_args.py
@@ -1,5 +1,4 @@
 from __future__ import (absolute_import, division, print_function)
-from collections import OrderedDict
 import numpy as np
 from qtpy.QtWidgets import QMainWindow, QTableWidgetItem
 from qtpy import QtCore, QtGui
diff --git a/addie/processing/mantid/master_table/reduction_configuration_handler.py b/addie/processing/mantid/master_table/reduction_configuration_handler.py
index 653035e2..f1b32b6e 100644
--- a/addie/processing/mantid/master_table/reduction_configuration_handler.py
+++ b/addie/processing/mantid/master_table/reduction_configuration_handler.py
@@ -89,18 +89,6 @@ def init_global_key_value_widgets(self):
         self._set_column_widths()
         self.init_table()
 
-    def populate_list_algo(self):
-        self.ui.list_key_comboBox.clear()
-        return
-
-        raw_list_algo = get_list_algo('AlignAndFocusPowderFromFiles')
-        list_algo_without_blacklist = self._remove_blacklist_algo(raw_list_algo)
-
-        global_list_keys = self.parent.global_key_value.keys()
-        global_unused_list_algo = self.remove_from_list(original_list=list_algo_without_blacklist,
-                                                        to_remove=global_list_keys)
-        self.ui.list_key_comboBox.addItems(global_unused_list_algo)
-
     def _remove_blacklist_algo(self, list_algo):
         list_algo_without_blacklist = []
         for _algo in list_algo:
@@ -121,14 +109,6 @@ def init_table(self):
     def show_global_key_value_widgets(self, visible=False):
         self.ui.global_key_value_groupBox.setVisible(visible)
 
-    def _remove_blacklist_algo(self, list_algo):
-        list_algo_without_blacklist = []
-        for _algo in list_algo:
-            if not (_algo in self.parent.align_and_focus_powder_from_files_blacklist):
-                list_algo_without_blacklist.append(_algo)
-
-        return list_algo_without_blacklist
-
     def remove_from_list(self,
                          original_list=[],
                          to_remove=[]):
diff --git a/addie/rietveld/event_handler.py b/addie/rietveld/event_handler.py
index 730105d3..6dc8e939 100644
--- a/addie/rietveld/event_handler.py
+++ b/addie/rietveld/event_handler.py
@@ -104,7 +104,7 @@ def do_load_bragg_file(main_window):
         print('Encountered exception')
         print(e)
 
-    except ValueError as e:
+    except ValueError:
         main_window.setStyleSheet("QStatusBar{padding-left:8px;color:red;font-weight:bold;}")
         main_window.ui.statusbar.showMessage("Error loading {}".format(bragg_file_names),
                                              main_window.statusbar_display_time)
diff --git a/addie/utilities/general.py b/addie/utilities/general.py
index 7cc47b9e..0345ae93 100644
--- a/addie/utilities/general.py
+++ b/addie/utilities/general.py
@@ -30,6 +30,7 @@ def json_extractor(json=None, list_args=[]):
     except KeyError:
         return "N/A"
 
+
 def get_list_algo(algo_name):
     _alg = mantid.AlgorithmManager.createUnmanaged(algo_name)
     _alg.initialize()