Allow spaces in # noqa lists

To match our new configuration file format and its allowance for spaces
in the list

Closes #356

src/flake8/defaults.py

@@ -46,7 +46,7 @@ NOQA_INLINE_REGEXP = re.compile(
     # We do not care about the ``: `` that follows ``noqa``
     # We do not care about the casing of ``noqa``
     # We want a comma-separated list of errors
-    '# noqa(?:: (?P<codes>([A-Z][0-9]+,?)+))?',
+    '# noqa(?:: (?P<codes>([A-Z][0-9]+(?:[,\s]+)?)+))?',
     re.IGNORECASE
 )
 

tests/unit/test_utils.py

@@ -19,6 +19,7 @@ RELATIVE_PATHS = ["flake8", "pep8", "pyflakes", "mccabe"]
     ("E123,W234,E206,", ["E123", "W234", "E206"]),
     ("E123,W234,E206, ,\n", ["E123", "W234", "E206"]),
     ("E123,W234,,E206,,", ["E123", "W234", "E206"]),
+    ("E123, W234,, E206,,", ["E123", "W234", "E206"]),
     ("E123,,W234,,E206,,", ["E123", "W234", "E206"]),
     (["E123", "W234", "E206"], ["E123", "W234", "E206"]),
     (["E123", "\n\tW234", "\n    E206"], ["E123", "W234", "E206"]),

tests/unit/test_violation.py

@@ -11,6 +11,7 @@ from flake8 import style_guide
     ('E121', 'a = 1  # noqa: E111,W123,F821', False),
     ('E111', 'a = 1  # noqa: E111,W123,F821', True),
     ('W123', 'a = 1  # noqa: E111,W123,F821', True),
+    ('W123', 'a = 1  # noqa: E111, W123,F821', True),
     ('E111', 'a = 1  # noqa: E11,W123,F821', True),
     ('E111', 'a = 1  # noqa, analysis:ignore', True),
     ('E111', 'a = 1  # noqa analysis:ignore', True),