normalize whitespace

src/escpos/image.py

@@ -28,7 +28,7 @@ class EscposImage(object):
     def __init__(self, img_source):
         """
         Load in an image
-        
+
         :param img_source: PIL.Image, or filename to load one from.
         """
         if isinstance(img_source, Image.Image):
@@ -45,12 +45,12 @@ class EscposImage(object):
         im = Image.new("RGB", img_original.size, (255, 255, 255))
         im.paste(img_original, mask=img_original.split()[3])
         # Convert down to greyscale
-        im = im.convert("L") 
+        im = im.convert("L")
         # Invert: Only works on 'L' images
         im = ImageOps.invert(im)
         # Pure black and white
         self._im = im.convert("1")
-    
+
     @property
     def width(self):
         """