Pastable version of posterize

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 <pre class="sunburst">def montage():
 topLeft = makePicture(getMediaPath(&quot;images-1.jpg&quot;)) # Top left picture, type in later
 topRight = makePicture(getMediaPath(&quot;images-2.jpg&quot;)) # Top Right picture, 
 bottomLeft = makePicture(getMediaPath(&quot;images-3.jpg&quot;)) # Bottom Left picture
 bottomRight = makePicture(getMediaPath(&quot;images-4.jpg&quot;)) # Bottom right picture
 middlePicture = makePicture(getMediaPath(&quot;images.jpg&quot;)) # Middle picture
 
 width = getWidth(topLeft)
 height = getHeight(topLeft)
 canvas = makeEmptyPicture(width*3, height*3)

left = 1
 top = 1
 midX = width +1
 midY = height +1

def posterize(pic): # simplifies the color range
 for pixel in getPixels(pic):
 if getRed(pixel) &gt; 127:
 redness = 255
 else:
 redness = 0
 if getGreen(pixel) &gt; 127:
 greenness = 255
 else:
 greenness = 0
 if getBlue(pixel) &gt; 127:
 blueness = 255
 else:
 blueness = 0
 setRed(pixel, redness)
 setGreen(pixel, greenness)
 setBlue(pixel, blueness)
 return pic

def grayscale(gPic): #sets RGB values equal to one another
 for p in getPixels(gPic):
 intensity = (getRed(p) + getGreen(p) + getBlue(p))/3
 setColor(p, makeColor(intensity, intensity, intensity))
 return gPic

def negative(nPic): # makes all the colors opposite original values
 for px in getPixels(nPic):
 red1 = getRed(px)
 green1 = getGreen(px)
 blue1 = getBlue(px)
 negColor = makeColor(255-red1, 255-green1, 255-blue1)
 setColor(px, negColor)
 return nPic

def sunset(sPic): # decreases blue and green to add a warmer red tone
 for p in getPixels(sPic):
 value = getBlue(p)
 setBlue(p, value*0.07)
 value1 = getGreen(p)
 setGreen(p, value1*0.07)
 return sPic

def copyPicture(littlePic, bg, x, y):
 for destX in range(getWidth(littlePic)):
 for destY in range(getHeight(littlePic)):
 fromPixel = getPixel(littlePic, destX+1, destY+1)
 destPixel = getPixel(bg, destX+x, destY+y)
 setColor(destPixel, getColor(fromPixel))
#posterized pic top left
 #posterizedTL = posterize(TopLeft)
 copyPicture(posterize(topLeft), canvas, left, top)

#grayscale pic top right
 #grayscaleTR = Grayscale(topRight)
 copyPicture(grayscale(topRight), canvas, midX, top)

#negative pic bottom left
 #negativeBL = negative(bottomLeft)
 copyPicture(negative(bottomLeft), canvas, left, midY)

#sunset pic bottom right
 #sunsetBR = sunset(bottomRight)
 copyPicture(sunset(bottomRight), canvas, midX, midY)

# &quot;original' pic
 copyPicture(middlePicture, canvas, midX/2, midY/2)
 return canvas

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Refactor :my => 'code'

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Pastable version of posterize