--- source
+++ first pass
@@ -1,6 +1,6 @@
-#
+# 
 # The Python Imaging Library.
 # $Id$
 #
 # Basic McIdas support for PIL
 #
@@ -13,39 +13,36 @@
 # Copyright (c) Secret Labs AB 1997.
 # Copyright (c) Fredrik Lundh 1997.
 #
 # See the README file for information on usage and redistribution.
 #
-
 import struct
 from . import Image, ImageFile
 
 __version__ = "0.2"
 
 
 def _accept(s):
     return s[:8] == b"\x00\x00\x00\x00\x00\x00\x00\x04"
 
 
+
+
 ##
 # Image plugin for McIdas area images.
-
 class McIdasImageFile(ImageFile.ImageFile):
-
     format = "MCIDAS"
     format_description = "McIdas area file"
 
     def _open(self):
-
         # parse area file directory
         s = self.fp.read(256)
         if not _accept(s) or len(s) != 256:
             raise SyntaxError("not an McIdas area file")
 
         self.area_descriptor_raw = s
         self.area_descriptor = w = [0] + list(struct.unpack("!64i", s))
-
         # get mode
         if w[11] == 1:
             mode = rawmode = "L"
         elif w[11] == 2:
             # FIXME: add memory map support
@@ -58,19 +55,15 @@
         else:
             raise SyntaxError("unsupported McIdas format")
 
         self.mode = mode
         self.size = w[10], w[9]
-
         offset = w[34] + w[15]
-        stride = w[15] + w[10]*w[11]*w[14]
-
+        stride = w[15] + w[10] * w[11] * w[14]
         self.tile = [("raw", (0, 0) + self.size, offset, (rawmode, stride, 1))]
 
 
 # --------------------------------------------------------------------
 # registry
-
 Image.register_open(McIdasImageFile.format, McIdasImageFile, _accept)
-
 # no default extension
 

--- first pass
+++ second pass
@@ -62,8 +62,9 @@
         self.tile = [("raw", (0, 0) + self.size, offset, (rawmode, stride, 1))]
 
 
 # --------------------------------------------------------------------
 # registry
-Image.register_open(McIdasImageFile.format, McIdasImageFile, _accept)
-# no default extension
+Image.register_open(
+    McIdasImageFile.format, McIdasImageFile, _accept
+)  # no default extension