diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..09ba14d
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,62 @@
+# Created by .ignore support plugin (hsz.mobi)
+### Python template
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+env/
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+*.egg-info/
+.installed.cfg
+*.egg
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*,cover
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+
diff --git a/arduino-laser/laser.py b/arduino-laser/laser.py
index 9d3cc04..46a728c 100644
--- a/arduino-laser/laser.py
+++ b/arduino-laser/laser.py
@@ -19,13 +19,16 @@
 cleaning up
 """
 
-import sys, serial, struct
-import pyaudio
-import numpy
-import math
+import struct
 from time import sleep
 import argparse
 
+import numpy
+
+import serial
+import pyaudio
+
+
 # manual test for sending motor speeds
 def manualTest(ser):
     print('staring manual test...')
diff --git a/arduino-laser/test_fft.py b/arduino-laser/test_fft.py
index 00bea57..5e43679 100644
--- a/arduino-laser/test_fft.py
+++ b/arduino-laser/test_fft.py
@@ -8,13 +8,13 @@
 
 """
 
+import math
+
 import numpy as np
-import sys
+
 from matplotlib import pyplot
-from time import sleep
-import argparse
 import pyaudio
-import math 
+
 
 N = 4096
 
diff --git a/ascii/ascii.py b/ascii/ascii.py
index 93fdde2..0bd7eca 100644
--- a/ascii/ascii.py
+++ b/ascii/ascii.py
@@ -6,12 +6,12 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, random, argparse
-import numpy as np
-import math
+import argparse
 
+import numpy as np
 from PIL import Image
 
+
 # gray scale level values from: 
 # http://paulbourke.net/dataformats/asciiart/
 
diff --git a/autos/autos.py b/autos/autos.py
index be52256..4a866bc 100644
--- a/autos/autos.py
+++ b/autos/autos.py
@@ -6,9 +6,12 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, random, argparse
+import random
+import argparse
+
 from PIL import Image, ImageDraw
 
+
 # create spacing/depth example
 def createSpacingDepthExample():
     tiles = [Image.open('test/a.png'), Image.open('test/b.png'), 
diff --git a/boids/boids.py b/boids/boids.py
index 5f55145..9c258ce 100644
--- a/boids/boids.py
+++ b/boids/boids.py
@@ -6,14 +6,18 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, argparse
+import argparse
 import math
+
 import numpy as np
-import matplotlib.pyplot as plt 
-import matplotlib.animation as animation
-from scipy.spatial.distance import squareform, pdist, cdist
 from numpy.linalg import norm
 
+import matplotlib.pyplot as plt
+import matplotlib.animation as animation
+
+from scipy.spatial.distance import squareform
+from scipy.spatial.distance import pdist
+
 width, height = 640, 480
 
 class Boids:
diff --git a/common/glutils.py b/common/glutils.py
index c8362cb..fd25ceb 100644
--- a/common/glutils.py
+++ b/common/glutils.py
@@ -6,15 +6,16 @@
 Some OpenGL utilities.
 """
 
-import OpenGL
-from OpenGL.GL import *
-from OpenGL.GL.shaders import *
+import math
 
-import numpy, math
+import numpy
 import numpy as np
-
 from PIL import Image
 
+from OpenGL.GL import *
+from OpenGL.GL.shaders import *
+
+
 def loadTexture(filename):
     """load OpenGL 2D texture from given image file"""
     img = Image.open(filename) 
diff --git a/conway/conway.py b/conway/conway.py
index 1499c0f..8bf95cc 100644
--- a/conway/conway.py
+++ b/conway/conway.py
@@ -6,11 +6,14 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, argparse
+import argparse
+
 import numpy as np
-import matplotlib.pyplot as plt 
+
+import matplotlib.pyplot as plt
 import matplotlib.animation as animation
 
+
 ON = 255
 OFF = 0
 vals = [ON, OFF]
diff --git a/karplus/ks.py b/karplus/ks.py
index 2a398da..f84ce4d 100644
--- a/karplus/ks.py
+++ b/karplus/ks.py
@@ -7,13 +7,19 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, os
-import time, random 
-import wave, argparse, pygame 
-import numpy as np
+import os
+import time
+import random
+import wave
+import argparse
 from collections import deque
+
+import numpy as np
+
+import pygame
 from matplotlib import pyplot as plt
 
+
 # show plot of algorithm in action?
 gShowPlot = False
 
diff --git a/karplus/sine.py b/karplus/sine.py
index da1a032..ffcc344 100644
--- a/karplus/sine.py
+++ b/karplus/sine.py
@@ -6,8 +6,11 @@
 Author: Mahesh Venkitachalam
 """
 
+import wave
+import math
+
 import numpy as np
-import wave, math
+
 
 sRate = 44100
 nSamples = sRate * 5
diff --git a/particle-system/box.py b/particle-system/box.py
index af4d724..8019386 100644
--- a/particle-system/box.py
+++ b/particle-system/box.py
@@ -6,12 +6,12 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, random, math
-import OpenGL
-from OpenGL.GL import *
 import numpy
+
+from OpenGL.GL import *
 import glutils
 
+
 strVS = """
 #version 330 core
 
diff --git a/particle-system/ps.py b/particle-system/ps.py
index 9207ed5..91990d6 100644
--- a/particle-system/ps.py
+++ b/particle-system/ps.py
@@ -6,12 +6,15 @@
 Description: A particle system class
 """
 
-import sys, random, math
-import OpenGL
-from OpenGL.GL import *
+import random
+import math
+
 import numpy
+
+from OpenGL.GL import *
 import glutils
 
+
 strVS = """
 #version 330 core
 
diff --git a/particle-system/psmain.py b/particle-system/psmain.py
index be72496..4f88bb5 100644
--- a/particle-system/psmain.py
+++ b/particle-system/psmain.py
@@ -6,15 +6,15 @@
 Description: A particle system
 """
 
-import sys, os, math, numpy
-import OpenGL
+import os
+
 from OpenGL.GL import *
-import numpy    
 from ps import ParticleSystem, Camera
 from box import Box
 import glutils
 import glfw
 
+
 class PSMaker:
     """GLFW Rendering window class for Particle System"""
     def __init__(self):
diff --git a/photomosaic/photomosaic.py b/photomosaic/photomosaic.py
index 781e32a..8f89d51 100644
--- a/photomosaic/photomosaic.py
+++ b/photomosaic/photomosaic.py
@@ -6,11 +6,15 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, os, random, argparse
-from PIL import Image
+import os
+import random
+import argparse
 import imghdr
+
+from PIL import Image
 import numpy as np
 
+
 def getAverageRGBOld(image):
   """
   Given PIL Image, return average value of color as (r, g, b)
diff --git a/piweather/piweather.py b/piweather/piweather.py
index 8551c88..e0abe87 100644
--- a/piweather/piweather.py
+++ b/piweather/piweather.py
@@ -6,13 +6,16 @@
 Author: Mahesh Venkitachalam
 """
 
-from bottle import route, run, request, response
+import argparse
+
+from bottle import route, run, request
+
 from bottle import static_file
-import random, argparse
+
 import RPi.GPIO as GPIO
-from time import sleep  
 import Adafruit_DHT
 
+
 @route('/hello')
 def hello():
     return "Hello Bottle World!"
diff --git a/playlist/playlist.py b/playlist/playlist.py
index c4d55df..5c624f3 100644
--- a/playlist/playlist.py
+++ b/playlist/playlist.py
@@ -8,12 +8,13 @@
 Website: electronut.in
 """
 
-import re, argparse
-import sys
-from matplotlib import pyplot
+import argparse
 import plistlib
+
 import numpy as np
 
+from matplotlib import pyplot
+
 
 def findCommonTracks(fileNames):
     """
diff --git a/simplegl/simpleglfw.py b/simplegl/simpleglfw.py
index 89c4dbd..a5ac728 100644
--- a/simplegl/simpleglfw.py
+++ b/simplegl/simpleglfw.py
@@ -7,12 +7,13 @@
 Author: Mahesh Venkitachalam
 """
 
-import OpenGL
-from OpenGL.GL import *
+import math
+import os
 
-import numpy, math, sys, os
-import glutils
+import numpy
 
+from OpenGL.GL import *
+import glutils
 import glfw
 
 strVS = """
diff --git a/spirograph/spiro.py b/spirograph/spiro.py
index 8894a79..b5fe39f 100644
--- a/spirograph/spiro.py
+++ b/spirograph/spiro.py
@@ -7,15 +7,16 @@
 Website: electronut.in
 """
 
-import sys, random, argparse
-import numpy as np
+import argparse
 import math
 import turtle
 import random
-from PIL import Image
-from datetime import datetime    
+from datetime import datetime
 from fractions import gcd
 
+from PIL import Image
+
+
 # A class that draws a spirograph
 class Spiro:
     # constructor
diff --git a/volrender/makedata.py b/volrender/makedata.py
index c4e6ee1..1ec2fe1 100644
--- a/volrender/makedata.py
+++ b/volrender/makedata.py
@@ -6,10 +6,13 @@
 Author: Mahesh Venkitachalam
 """
 
-import sys, os
+import os
+
 import numpy as np
+
 import Image
 
+
 def makeSphereCuboid():
     """create a volume with a sphere and a cuboid inside"""
     Nx, Ny, Nz = 256, 256, 256
diff --git a/volrender/raycast.py b/volrender/raycast.py
index 84e7a55..475ae12 100644
--- a/volrender/raycast.py
+++ b/volrender/raycast.py
@@ -7,15 +7,11 @@
 the Ray Casting method.
 """
 
+import math
 
-import OpenGL
 from OpenGL.GL import *
 from OpenGL.GL.shaders import *
 
-import numpy as np
-import math, sys 
-
-import raycube, glutils, volreader
 
 strVS = """
 #version 330 core
diff --git a/volrender/raycube.py b/volrender/raycube.py
index 3f77975..39530ca 100644
--- a/volrender/raycube.py
+++ b/volrender/raycube.py
@@ -6,12 +6,11 @@
 Generates texture that has the cube/ray computation.
 """
 
-import OpenGL
+import numpy
+
 from OpenGL.GL import *
 from OpenGL.GL.shaders import *
 
-import numpy, math, sys 
-import volreader, glutils
 
 strVS = """
 #version 330 core
diff --git a/volrender/slicerender.py b/volrender/slicerender.py
index bf397e1..fd84f90 100644
--- a/volrender/slicerender.py
+++ b/volrender/slicerender.py
@@ -7,12 +7,11 @@
 of a Volumetric data set.
 """
 
-import OpenGL
+import numpy
+
 from OpenGL.GL import *
 from OpenGL.GL.shaders import *
-import numpy, math, sys 
 
-import volreader, glutils
 
 strVS = """
 # version 330 core
diff --git a/volrender/volreader.py b/volrender/volreader.py
index 1e072e7..6a0abb9 100644
--- a/volrender/volreader.py
+++ b/volrender/volreader.py
@@ -7,13 +7,12 @@
 """
 
 import os
+
 import numpy as np
 from PIL import Image
 
-import OpenGL
 from OpenGL.GL import *
 
-from scipy import misc
 
 def loadVolume(dirName):
     """read volume from directory as a 3D texture"""
diff --git a/volrender/volrender.py b/volrender/volrender.py
index f047cdd..0aa6d89 100644
--- a/volrender/volrender.py
+++ b/volrender/volrender.py
@@ -7,11 +7,14 @@
 
 """
 
-import sys, argparse, os
+import argparse
+import os
+
 from slicerender import *
 from raycast import *
 import glfw
 
+
 class RenderWin:
     """GLFW Rendering window class"""
     def __init__(self, imageDir):