diff --git a/src/img2pdf.py b/src/img2pdf.py
index 4b222ad..74ebb5e 100755
--- a/src/img2pdf.py
+++ b/src/img2pdf.py
@@ -167,6 +167,8 @@ class MyPdfDict(object):
 class MyPdfName():
     def __getattr__(self, name):
         return b'/' + name.encode('ascii')
+
+
 MyPdfName = MyPdfName()
 
 
@@ -708,7 +710,7 @@ def read_images(rawdata, colorspace, first_frame_only=False):
                     ccittdata = transcode_monochrome(imgdata)
                     imgformat = ImageFormat.CCITTGroup4
                     result.append((color, ndpi, imgformat, ccittdata,
-                        imgwidthpx, imgheightpx))
+                                   imgwidthpx, imgheightpx))
                     img_page_count += 1
                     continue
                 except Exception as e:
@@ -1709,5 +1711,6 @@ values set via the --border option.
             traceback.print_exc(file=sys.stderr)
         exit(1)
 
+
 if __name__ == '__main__':
     main()
diff --git a/src/jp2.py b/src/jp2.py
index 7f61312..30edb7e 100644
--- a/src/jp2.py
+++ b/src/jp2.py
@@ -116,6 +116,7 @@ def parsejp2(data):
     # retrieving the dpi is optional so we do not error out if not present
     return (width, height, colorspace, hdpi, vdpi)
 
+
 if __name__ == "__main__":
     import sys
     width, height, colorspace = parsejp2(open(sys.argv[1]).read())
diff --git a/src/tests/__init__.py b/src/tests/__init__.py
index 6b468aa..506fc48 100644
--- a/src/tests/__init__.py
+++ b/src/tests/__init__.py
@@ -400,7 +400,7 @@ layout_test_cases = [
 
 def tiff_header_for_ccitt(width, height, img_size, ccitt_group=4):
     # Quick and dirty TIFF header builder from
-    # https://stackoverflow.com/questions/2641770/extracting-image-from-pdf-with-ccittfaxdecode-filter
+    # https://stackoverflow.com/questions/2641770
     tiff_header_struct = '<' + '2s' + 'h' + 'l' + 'h' + 'hhll' * 8 + 'h'
     return struct.pack(
         tiff_header_struct,
@@ -413,7 +413,8 @@ def tiff_header_for_ccitt(width, height, img_size, ccitt_group=4):
         258, 3, 1, 1,  # BitsPerSample, SHORT, 1, 1
         259, 3, 1, ccitt_group,  # Compression, SHORT, 1, 4 = CCITT Group 4
         262, 3, 1, 1,  # Threshholding, SHORT, 1, 0 = WhiteIsZero
-        273, 4, 1, struct.calcsize(tiff_header_struct),  # StripOffsets, LONG, 1, len of header
+        273, 4, 1, struct.calcsize(
+            tiff_header_struct),  # StripOffsets, LONG, 1, len of header
         278, 4, 1, height,  # RowsPerStrip, LONG, 1, lenght
         279, 4, 1, img_size,  # StripByteCounts, LONG, 1, size of image
         0  # last IFD