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PyCQA · May 1, 2020 · 39895aa · 39895aa
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commit 39895aa
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Showing 2 changed files with 5 additions and 2 deletions.
diff --git a/pycodestyle.py b/pycodestyle.py
@@ -140,8 +140,8 @@ def lru_cache(maxsize=128):  # noqa as it's a fake implementation.
 WHITESPACE_AFTER_COMMA_REGEX = re.compile(r'[,;:]\s*(?:  |\t)')
 COMPARE_SINGLETON_REGEX = re.compile(r'(\bNone|\bFalse|\bTrue)?\s*([=!]=)'
                                      r'\s*(?(1)|(None|False|True))\b')
-COMPARE_NEGATIVE_REGEX = re.compile(r'\b(not)\s+[^][)(}{ ]+\s+(in|is)'
-                                    r'\s+(?!not\s)')
+COMPARE_NEGATIVE_REGEX = re.compile(r'\b(?<!is\s)(not)\s+[^][)(}{ ]+\s+'
+                                    r'(in|is)\s')
 COMPARE_TYPE_REGEX = re.compile(r'(?:[=!]=|is(?:\s+not)?)\s+type(?:s.\w+Type'
                                 r'|\s*\(\s*([^)]*[^ )])\s*\))')
 KEYWORD_REGEX = re.compile(r'(\s*)\b(?:%s)\b(\s*)' % r'|'.join(KEYWORDS))

diff --git a/testsuite/E71.py b/testsuite/E71.py
@@ -67,6 +67,9 @@
 #: E714
 if not X is Y is not Z:
     pass
+#: E714
+if not X is not Y:
+    pass
 
 #
 #: Okay
-Original file line number
+Diff line change
@@ Expand Up / @@ -67,6 +67,9 @@ @@
     #: E714
     if not X is Y is not Z:
         pass
+    #: E714
+    if not X is not Y:
+        pass
     #
     #: Okay
@@ Expand Down @@