diff --git a/contrib/cyrillic_convert.py b/contrib/cyrillic_convert.py
index 58eafd314..4a8a4c705 100644
--- a/contrib/cyrillic_convert.py
+++ b/contrib/cyrillic_convert.py
@@ -4,7 +4,6 @@
 
 import fileinput
 import argparse
-import sys
 
 gibberish_to_cyrillic = {
     'À': 'А',
diff --git a/overviewer.py b/overviewer.py
index 8e9783b3d..57d1a64a3 100755
--- a/overviewer.py
+++ b/overviewer.py
@@ -17,7 +17,6 @@
 
 from __future__ import print_function
 
-import platform
 import sys
 
 # quick version check
@@ -28,7 +27,6 @@
 import os
 import os.path
 import re
-import subprocess
 import multiprocessing
 import time
 import logging
@@ -38,10 +36,9 @@
 from overviewer_core import util
 from overviewer_core import logger
 from overviewer_core import textures
-from overviewer_core import optimizeimages, world
+from overviewer_core import world
 from overviewer_core import config_parser, tileset, assetmanager, dispatcher
 from overviewer_core import cache
-from overviewer_core import observer
 from overviewer_core.nbt import CorruptNBTError
 
 helptext = """
diff --git a/overviewer_core/progressbar.py b/overviewer_core/progressbar.py
index c06ceed5c..5fe10ddd5 100644
--- a/overviewer_core/progressbar.py
+++ b/overviewer_core/progressbar.py
@@ -343,8 +343,6 @@ def finish(self):
 
 
 if __name__=='__main__':
-    import os
-
     def example1():
         widgets = ['Test: ', Percentage(), ' ', Bar(marker=RotatingMarker()),
                    ' ', ETA(), ' ', FileTransferSpeed()]
diff --git a/overviewer_core/settingsDefinition.py b/overviewer_core/settingsDefinition.py
index 78def0ed2..1c4ceca96 100644
--- a/overviewer_core/settingsDefinition.py
+++ b/overviewer_core/settingsDefinition.py
@@ -46,8 +46,7 @@
 from collections import OrderedDict
 
 from .settingsValidators import *
-from .observer import ProgressBarObserver, LoggingObserver, JSObserver
-from .optimizeimages import pngnq, optipng, pngcrush
+from .observer import ProgressBarObserver, LoggingObserver
 import platform
 import sys
 
diff --git a/overviewer_core/settingsValidators.py b/overviewer_core/settingsValidators.py
index 3ae70f03c..c7a2fc650 100644
--- a/overviewer_core/settingsValidators.py
+++ b/overviewer_core/settingsValidators.py
@@ -5,7 +5,6 @@
 from collections import OrderedDict
 
 from . import rendermodes
-from . import util
 from .optimizeimages import Optimizer
 from .world import LOWER_LEFT, LOWER_RIGHT, UPPER_LEFT, UPPER_RIGHT
 
diff --git a/overviewer_core/textures.py b/overviewer_core/textures.py
index 88677264d..321c9545c 100644
--- a/overviewer_core/textures.py
+++ b/overviewer_core/textures.py
@@ -3622,10 +3622,7 @@ def repeater(self, blockid, data):
     top = self.load_image_texture("assets/minecraft/textures/block/repeater.png") if blockid == 93 else self.load_image_texture("assets/minecraft/textures/block/repeater_on.png")
     side = self.load_image_texture("assets/minecraft/textures/block/smooth_stone_slab_side.png")
     increment = 13
-    
-    if (data & 0x3) == 0: # pointing east
-        pass
-    
+
     if (data & 0x3) == 1: # pointing south
         top = top.rotate(270)
 
diff --git a/overviewer_core/tileset.py b/overviewer_core/tileset.py
index 4f2def606..ece5d1ee7 100644
--- a/overviewer_core/tileset.py
+++ b/overviewer_core/tileset.py
@@ -15,7 +15,6 @@
 
 import errno
 import functools
-import itertools
 import logging
 import os
 import os.path
diff --git a/overviewer_core/util.py b/overviewer_core/util.py
index 403cbcd06..5050ddf37 100644
--- a/overviewer_core/util.py
+++ b/overviewer_core/util.py
@@ -22,7 +22,7 @@
 import os.path
 import platform
 import sys
-from itertools import cycle, islice, product
+from itertools import cycle, islice
 from string import hexdigits
 from subprocess import PIPE, Popen
 
diff --git a/overviewer_core/world.py b/overviewer_core/world.py
index c96db5325..2f8ab0212 100644
--- a/overviewer_core/world.py
+++ b/overviewer_core/world.py
@@ -18,9 +18,7 @@
 import os.path
 import logging
 import time
-import random
 import re
-import locale
 
 import numpy
 
diff --git a/setup.py b/setup.py
index af0abd6fc..440b1b1c2 100755
--- a/setup.py
+++ b/setup.py
@@ -16,8 +16,6 @@
 from distutils.command.clean import clean
 from distutils.command.build_ext import build_ext
 from distutils.command.sdist import sdist
-from distutils.cmd import Command
-from distutils.dir_util import remove_tree
 from distutils.sysconfig import get_python_inc
 from distutils import log
 import os, os.path