Cosmetic fixes for whitespace and a regex in packaging.

The goal of the regex is to catch a (alpha), b (beta), c or rc
(release candidate), so the existing pattern puzzled me. Tests were
OK before and after the change.

Lib/packaging/tests/test_version.py

@@ -103,7 +103,7 @@ class VersionTestCase(unittest.TestCase):
         False
         >>> V('1.2.0rc1') >= V('1.2.0')
         False
-        >>> (V('1.0') > V('1.0b2'))
+        >>> V('1.0') > V('1.0b2')
         True
         >>> V('1.0') > V('1.0c2')
         True
@@ -248,9 +248,9 @@ class VersionWhiteBoxTestCase(unittest.TestCase):
     def test_parse_numdots(self):
         # For code coverage completeness, as pad_zeros_length can't be set or
         # influenced from the public interface
-        self.assertEqual(V('1.0')._parse_numdots('1.0', '1.0',
-                                                  pad_zeros_length=3),
-                          [1, 0, 0])
+        self.assertEqual(
+            V('1.0')._parse_numdots('1.0', '1.0', pad_zeros_length=3),
+            [1, 0, 0])
 
 
 def test_suite():

Lib/packaging/version.py

@@ -253,7 +253,7 @@ def suggest_normalized_version(s):
     # if we have something like "b-2" or "a.2" at the end of the
     # version, that is pobably beta, alpha, etc
     # let's remove the dash or dot
-    rs = re.sub(r"([abc|rc])[\-\.](\d+)$", r"\1\2", rs)
+    rs = re.sub(r"([abc]|rc)[\-\.](\d+)$", r"\1\2", rs)
 
     # 1.0-dev-r371 -> 1.0.dev371
     # 0.1-dev-r79 -> 0.1.dev79