Fix false positive superfluous-parens for tuples

Tuples can be created with inner tuples. This creates double parenthesis
which we flagged incorrectly.
This closes #4907

ChangeLog

@@ -59,6 +59,10 @@ Release date: TBA
 
   Closes #4945
 
+* Fix false positive ``superfluous-parens`` for tuples created with inner tuples
+
+  Closes #4907
+
 
 What's New in Pylint 2.10.3?
 ============================

doc/whatsnew/2.11.rst

@@ -65,3 +65,7 @@ Other Changes
   and ``pathlib.Path().write_text()``
 
   Closes #4945
+
+* Fix false positive ``superfluous-parens`` for tuples created with inner tuples
+
+  Closes #4907

pylint/checkers/format.py

@@ -401,11 +401,11 @@ def _check_keyword_parentheses(
                 depth -= 1
                 if depth:
                     if contains_double_parens and tokens[i + 1].string == ")":
-                        self.add_message(
-                            "superfluous-parens", line=line_num, args=keyword_token
-                        )
+                        # For walrus operators in `if (not)` conditions and comprehensions
+                        if keyword_token in {"in", "if", "not"}:
+                            continue
                         return
-                    contains_double_parens = 0
+                    contains_double_parens -= 1
                     continue
                 # ')' can't happen after if (foo), since it would be a syntax error.
                 if tokens[i + 1].string in (":", ")", "]", "}", "in") or tokens[

tests/checkers/unittest_format.py

@@ -165,11 +165,6 @@ def testCheckKeywordParensHandlesUnnecessaryParens(self):
             (Message("superfluous-parens", line=1, args="if"), "if (foo):", 0),
             (Message("superfluous-parens", line=1, args="if"), "if ((foo, bar)):", 0),
             (Message("superfluous-parens", line=1, args="if"), "if (foo(bar)):", 0),
-            (
-                Message("superfluous-parens", line=1, args="return"),
-                "return ((x for x in x))",
-                0,
-            ),
             (Message("superfluous-parens", line=1, args="not"), "not (foo)", 0),
             (Message("superfluous-parens", line=1, args="not"), "if not (foo):", 1),
             (Message("superfluous-parens", line=1, args="if"), "if (not (foo)):", 0),

tests/functional/s/super/superfluous_parens.py

@@ -1,6 +1,7 @@
 """Test the superfluous-parens warning."""
-from __future__ import print_function
 # pylint: disable=unneeded-not, unnecessary-comprehension, missing-function-docstring, invalid-name, fixme
+# pylint: disable=import-error, missing-class-docstring, too-few-public-methods
+import numpy as np
 A = 3
 if (A == 5):  # [superfluous-parens]
     pass
@@ -18,10 +19,10 @@
 del(DICT['b'])  # [superfluous-parens]
 del DICT['a']
 
-B = [x for x in ((3, 4))]  # [superfluous-parens]
+B = [x for x in ((3, 4))]
 C = [x for x in ((3, 4) if 1 > 0 else (5, 6))]
-D = [x for x in ((3, 4) if 1 > 0 else ((5, 6)))]  # [superfluous-parens]
-E = [x for x in ((3, 4) if 1 > 0 else ((((5, 6)))))]  # [superfluous-parens]
+D = [x for x in ((3, 4) if 1 > 0 else ((5, 6)))]
+E = [x for x in ((3, 4) if 1 > 0 else ((((5, 6)))))]
 
 # Test assertions
 F = "Version 1.0"
@@ -34,14 +35,30 @@
 NUMS_LIST = ['1', '2', '3']
 NUMS_SET = {'1', '2', '3'}
 NUMS_DICT = {'1': 1, '2': 2, '3': 3}
+I = tuple(x for x in ((a, str(a)) for a in ()))
 
 # Test functions
 def function_A():
-    return (x for x in ((3, 4)))  # [superfluous-parens]
+    return (x for x in ((3, 4)))
 
 # TODO: Test string combinations, see https://github.com/PyCQA/pylint/issues/4792
 # Lines 45, 46 & 47 should raise the superfluous-parens message
-I = "TestString"
-J = ("Test " + "String")
-K = ("Test " + "String") in I
+J = "TestString"
+K = ("Test " + "String")
+L = ("Test " + "String") in I
 assert "" + ("Version " + "String") in I
+
+# Test numpy
+def function_B(var_1: int, var_2: int) -> np.ndarray:
+    result = (((var_1 & var_2)) > 0)
+    return result.astype(np.float32)
+
+def function_C(var_1: int, var_2: int) -> np.ndarray:
+    return (((var_1 & var_2)) > 0).astype(np.float32)
+
+# Test Class
+class ClassA:
+    keys = []
+
+    def __iter__(self):
+        return ((k, getattr(self, k)) for k in self.keys)

tests/functional/s/super/superfluous_parens.txt

@@ -1,10 +1,6 @@
-superfluous-parens:5:0::Unnecessary parens after 'if' keyword:HIGH
-superfluous-parens:7:0::Unnecessary parens after 'not' keyword:HIGH
-superfluous-parens:11:0::Unnecessary parens after 'for' keyword:HIGH
-superfluous-parens:13:0::Unnecessary parens after 'if' keyword:HIGH
-superfluous-parens:18:0::Unnecessary parens after 'del' keyword:HIGH
-superfluous-parens:21:0::Unnecessary parens after 'in' keyword:HIGH
-superfluous-parens:23:0::Unnecessary parens after 'else' keyword:HIGH
-superfluous-parens:24:0::Unnecessary parens after 'else' keyword:HIGH
-superfluous-parens:30:0::Unnecessary parens after 'assert' keyword:HIGH
-superfluous-parens:40:0::Unnecessary parens after 'in' keyword:HIGH
+superfluous-parens:6:0::Unnecessary parens after 'if' keyword:HIGH
+superfluous-parens:8:0::Unnecessary parens after 'not' keyword:HIGH
+superfluous-parens:12:0::Unnecessary parens after 'for' keyword:HIGH
+superfluous-parens:14:0::Unnecessary parens after 'if' keyword:HIGH
+superfluous-parens:19:0::Unnecessary parens after 'del' keyword:HIGH
+superfluous-parens:31:0::Unnecessary parens after 'assert' keyword:HIGH