flake8: F841 local variable is assigned to but never used

Tests/test_file_tar.py

@@ -32,7 +32,7 @@ class TestFileTar(PillowTestCase):
         tar.close()
 
     def test_contextmanager(self):
-        with TarIO.TarIO(TEST_TAR_FILE, 'hopper.jpg') as tar:
+        with TarIO.TarIO(TEST_TAR_FILE, 'hopper.jpg'):
             pass
 
 

Tests/test_image_transform.py

@@ -152,7 +152,7 @@ class TestImageTransform(PillowTestCase):
         ]
 
         # Yeah. Watch some JIT optimize this out.
-        pattern = None
+        pattern = None  # noqa: F841
 
         self.test_mesh()
 

Tests/test_imagecms.py

@@ -10,7 +10,7 @@ try:
     from PIL import ImageCms
     from PIL.ImageCms import ImageCmsProfile
     ImageCms.core.profile_open
-except ImportError as v:
+except ImportError:
     # Skipped via setUp()
     pass
 

Tests/test_qt_image_toqimage.py

@@ -86,7 +86,7 @@ if ImageQt.qt_is_installed:
 
             pixmap1 = QtGui.QPixmap.fromImage(qimage)
 
-            QHBoxLayout(self)
+            QHBoxLayout(self)  # hbox
 
             lbl = QLabel(self)
             # Segfault in the problem

docs/example/DdsImagePlugin.py

@@ -225,7 +225,7 @@ class DdsImageFile(ImageFile.ImageFile):
         self.mode = "RGBA"
 
         pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
-        reserved = struct.unpack("<11I", header.read(44))
+        struct.unpack("<11I", header.read(44))  # reserved
 
         # pixel format
         pfsize, pfflags = struct.unpack("<2I", header.read(8))
@@ -235,10 +235,8 @@ class DdsImageFile(ImageFile.ImageFile):
 
         if fourcc == b"DXT1":
             self.decoder = "DXT1"
-            codec = _dxt1
         elif fourcc == b"DXT5":
             self.decoder = "DXT5"
-            codec = _dxt5
         else:
             raise NotImplementedError("Unimplemented pixel format %r" % fourcc)
 

src/PIL/DdsImagePlugin.py

@@ -118,7 +118,7 @@ class DdsImageFile(ImageFile.ImageFile):
         self.mode = "RGBA"
 
         pitch, depth, mipmaps = struct.unpack("<3I", header.read(12))
-        reserved = struct.unpack("<11I", header.read(44))
+        struct.unpack("<11I", header.read(44))  # reserved
 
         # pixel format
         pfsize, pfflags = struct.unpack("<2I", header.read(8))

src/PIL/FtexImagePlugin.py

@@ -66,8 +66,8 @@ class FtexImageFile(ImageFile.ImageFile):
     format_description = "Texture File Format (IW2:EOC)"
 
     def _open(self):
-        magic = struct.unpack("<I", self.fp.read(4))
+        struct.unpack("<I", self.fp.read(4))  # magic
-        version = struct.unpack("<i", self.fp.read(4))
+        struct.unpack("<i", self.fp.read(4))  # version
         self._size = struct.unpack("<2i", self.fp.read(8))
         mipmap_count, format_count = struct.unpack("<2i", self.fp.read(8))
 

src/PIL/ImImagePlugin.py

@@ -153,7 +153,7 @@ class ImImageFile(ImageFile.ImageFile):
 
             try:
                 m = split.match(s)
-            except re.error as v:
+            except re.error:
                 raise SyntaxError("not an IM file")
 
             if m:

src/PIL/PcfFontFile.py

@@ -230,7 +230,7 @@ class PcfFontFile(FontFile.FontFile):
         firstCol, lastCol = i16(fp.read(2)), i16(fp.read(2))
         firstRow, lastRow = i16(fp.read(2)), i16(fp.read(2))
 
-        default = i16(fp.read(2))
+        i16(fp.read(2))  # default
 
         nencoding = (lastCol - firstCol + 1) * (lastRow - firstRow + 1)
 

src/PIL/PsdImagePlugin.py

@@ -92,7 +92,7 @@ class PsdImageFile(ImageFile.ImageFile):
             # load resources
             end = self.fp.tell() + size
             while self.fp.tell() < end:
-                signature = read(4)
+                read(4)  # signature
                 id = i16(read(2))
                 name = read(i8(read(1)))
                 if not (len(name) & 1):
@@ -207,17 +207,13 @@ def _layerinfo(file):
             mode = None  # unknown
 
         # skip over blend flags and extra information
-        filler = read(12)
+        read(12)  # filler
         name = ""
         size = i32(read(4))
         combined = 0
         if size:
             length = i32(read(4))
             if length:
-                mask_y = i32(read(4))
-                mask_x = i32(read(4))
-                mask_h = i32(read(4)) - mask_y
-                mask_w = i32(read(4)) - mask_x
                 file.seek(length - 16, 1)
             combined += length + 4
 

src/PIL/WebPImagePlugin.py

@@ -2,7 +2,7 @@ from . import Image, ImageFile
 try:
     from . import _webp
     SUPPORTED = True
-except ImportError as e:
+except ImportError:
     SUPPORTED = False
 from io import BytesIO