diff --git a/scripts/Diffraction/isis_powder/abstract_inst.py b/scripts/Diffraction/isis_powder/abstract_inst.py
index 325f70cf031e2853ce88799bdee3ed2cf13bebfb..47bba21a8e1acd6176d954314088473f7acba4bf 100644
--- a/scripts/Diffraction/isis_powder/abstract_inst.py
+++ b/scripts/Diffraction/isis_powder/abstract_inst.py
@@ -160,7 +160,6 @@ class AbstractInst(object):
         @return: The filename of the file - Without the path or extension
         """
 
-
     @staticmethod
     @abstractmethod
     def _get_instrument_alg_save_ranges(instrument=''):
@@ -261,7 +260,6 @@ def _prefix_dot_to_ext(ext):
         return ext
 
 
-
 # These empty hooks can be used to diagnose when an override hasn't
 # fired or if steps are correctly being skipped
 
diff --git a/scripts/Diffraction/isis_powder/polaris.py b/scripts/Diffraction/isis_powder/polaris.py
index c87284070fc357eab4a207bc5f7e8a256a88c894..87445de16f30cef095a8e8b2a64a494e76225939 100644
--- a/scripts/Diffraction/isis_powder/polaris.py
+++ b/scripts/Diffraction/isis_powder/polaris.py
@@ -138,8 +138,8 @@ class Polaris(AbstractInst):
 
     def correct_sample_vanadium(self, focused_ws, index, vanadium_ws=None):
         spectra_name = "sample_ws-" + str(index + 1)
-        sample = mantid.CropWorkspace(InputWorkspace=focused_ws, OutputWorkspace=spectra_name,
-                                      StartWorkspaceIndex=index, EndWorkspaceIndex=index)
+        mantid.CropWorkspace(InputWorkspace=focused_ws, OutputWorkspace=spectra_name,
+                             StartWorkspaceIndex=index, EndWorkspaceIndex=index)
 
         if vanadium_ws:
             van_rebinned = mantid.RebinToWorkspace(WorkspaceToRebin=vanadium_ws, WorkspaceToMatch=spectra_name)
diff --git a/scripts/Diffraction/isis_powder/polaris_routines/polaris_calib_parser.py b/scripts/Diffraction/isis_powder/polaris_routines/polaris_calib_parser.py
index 48680fca5acdd3c61842dc66a9de5b7ad455cce0..a62c54912f27922a0d63787b6a7befe96c761f45 100644
--- a/scripts/Diffraction/isis_powder/polaris_routines/polaris_calib_parser.py
+++ b/scripts/Diffraction/isis_powder/polaris_routines/polaris_calib_parser.py
@@ -59,4 +59,3 @@ def _find_dictionary_key(dict_to_search, run_number):
             return key
 
     return None
-
diff --git a/scripts/Diffraction/isis_powder/routines/__init__.py b/scripts/Diffraction/isis_powder/routines/__init__.py
index 8b137891791fe96927ad78e64b0aad7bded08bdc..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391 100644
--- a/scripts/Diffraction/isis_powder/routines/__init__.py
+++ b/scripts/Diffraction/isis_powder/routines/__init__.py
@@ -1 +0,0 @@
-
diff --git a/scripts/Diffraction/isis_powder/routines/common.py b/scripts/Diffraction/isis_powder/routines/common.py
index 99d7ee87605e200573eceedc6482b6a56f8b6038..8acbec6769f451863c5cb046399c4d987939a2b9 100644
--- a/scripts/Diffraction/isis_powder/routines/common.py
+++ b/scripts/Diffraction/isis_powder/routines/common.py
@@ -1,7 +1,5 @@
 from __future__ import (absolute_import, division, print_function)
 
-from six.moves import xrange
-
 import mantid.simpleapi as mantid
 
 # --- Public API --- #
diff --git a/scripts/Diffraction/isis_powder/routines/focus.py b/scripts/Diffraction/isis_powder/routines/focus.py
index ddd86e372c88a24c44697bc8ef3c3453d5b64437..ab1cf2f89123741e4f1ba0dc11321881dfd8bc9c 100644
--- a/scripts/Diffraction/isis_powder/routines/focus.py
+++ b/scripts/Diffraction/isis_powder/routines/focus.py
@@ -91,4 +91,4 @@ def _apply_binning_to_spectra(spectra_list, binning_list):
     for ws, bin_params in zip(spectra_list, binning_list):
         # Starting bin edge / bin width / last bin edge
         rebin_string = bin_params[0] + ',' + bin_params[1] + ',' + bin_params[2]
-        mantid.Rebin(InputWorkspace=ws, OutputWorkspace=ws, Params=rebin_string)
\ No newline at end of file
+        mantid.Rebin(InputWorkspace=ws, OutputWorkspace=ws, Params=rebin_string)