Fix lint errors on igzip.py

Author: rhpvorderman

src/isal/igzip.py

@@ -26,7 +26,6 @@
 import io
 import os
 import sys
-from gzip import READ, WRITE
 
 import _compression
 
@@ -47,7 +46,8 @@ class BadGzipFile(gzip.BadGzipFile):
 except AttributeError:  # Versions lower than 3.8 do not have BadGzipFile
     pass
 
-# The open method was copied from the python source with minor adjustments.
+
+# The open method was copied from the CPython source with minor adjustments.
 def open(filename, mode="rb", compresslevel=_COMPRESS_LEVEL_TRADEOFF,
          encoding=None, errors=None, newline=None):
     """Open a gzip-compressed file in binary or text mode. This uses the isa-l
@@ -170,6 +170,7 @@ def _read_eof(self):
         if c:
             self._fp.prepend(c)
 
+
 # Plagiarized from gzip.py from python's stdlib.
 def compress(data, compresslevel=_COMPRESS_LEVEL_BEST, *, mtime=None):
     """Compress data in one shot and return the compressed string.

tests/test_gzip_compliance.py

@@ -16,6 +16,7 @@
 
 import array
 import functools
+import gzip
 import io
 import os
 import pathlib
@@ -516,19 +517,19 @@ def test_fileobj_mode(self):
         igzip.IGzipFile(self.filename, "wb").close()
         with open(self.filename, "r+b") as f:
             with igzip.IGzipFile(fileobj=f, mode='r') as g:
-                self.assertEqual(g.mode, igzip.READ)
+                self.assertEqual(g.mode, gzip.READ)
             with igzip.IGzipFile(fileobj=f, mode='w') as g:
-                self.assertEqual(g.mode, igzip.WRITE)
+                self.assertEqual(g.mode, gzip.WRITE)
             with igzip.IGzipFile(fileobj=f, mode='a') as g:
-                self.assertEqual(g.mode, igzip.WRITE)
+                self.assertEqual(g.mode, gzip.WRITE)
             with igzip.IGzipFile(fileobj=f, mode='x') as g:
-                self.assertEqual(g.mode, igzip.WRITE)
+                self.assertEqual(g.mode, gzip.WRITE)
             with self.assertRaises(ValueError):
                 igzip.IGzipFile(fileobj=f, mode='z')
         for mode in "rb", "r+b":
             with open(self.filename, mode) as f:
                 with igzip.IGzipFile(fileobj=f) as g:
-                    self.assertEqual(g.mode, igzip.READ)
+                    self.assertEqual(g.mode, gzip.READ)
         for mode in "wb", "ab", "xb":
             if "x" in mode:
                 os.unlink(self.filename)
@@ -540,7 +541,7 @@ def test_fileobj_mode(self):
                 else:
                     g = igzip.IGzipFile(fileobj=f)
                 with g:
-                    self.assertEqual(g.mode, igzip.WRITE)
+                    self.assertEqual(g.mode, gzip.WRITE)
 
     def test_bytes_filename(self):
         str_filename = self.filename