Remove suggestions on None

Author: vstinner

Lib/test/test_traceback.py

@@ -4644,25 +4644,6 @@ def test_cross_language_mutable_on_immutable(self):
                 actual = self.get_suggestion(obj, attr)
                 self.assertEndsWith(actual, expected)
 
-    @force_not_colorized
-    def test_cross_language_none_suggestions(self):
-        # Common methods tried on None suggest the expected type
-        cases = [
-            ('keys', "Did you expect a 'dict'?"),
-            ('values', "Did you expect a 'dict'?"),
-            ('items', "Did you expect a 'dict'?"),
-            ('upper', "Did you expect a 'str'?"),
-            ('lower', "Did you expect a 'str'?"),
-            ('strip', "Did you expect a 'str'?"),
-            ('split', "Did you expect a 'str'?"),
-            ('sort', "Did you expect a 'list'?"),
-            ('pop', "Did you expect a 'list' or 'dict'?"),
-        ]
-        for attr, expected in cases:
-            with self.subTest(attr=attr):
-                actual = self.get_suggestion(None, attr)
-                self.assertEndsWith(actual, expected)
-
     @force_not_colorized
     def test_cross_language_float_bitwise(self):
         # Bitwise operators on float suggest using int

Lib/traceback.py

@@ -1751,16 +1751,6 @@ def print(self, *, file=None, chain=True, **kwargs):
     "__xor__": ((float, "Did you mean to use an 'int' object? Bitwise operators are not supported by 'float'.", True),),
     "__lshift__": ((float, "Did you mean to use an 'int' object? Bitwise operators are not supported by 'float'.", True),),
     "__rshift__": ((float, "Did you mean to use an 'int' object? Bitwise operators are not supported by 'float'.", True),),
-    # NoneType -- common methods tried on None (got None instead of expected type)
-    "keys": ((types.NoneType, "Did you expect a 'dict'?", True),),
-    "values": ((types.NoneType, "Did you expect a 'dict'?", True),),
-    "items": ((types.NoneType, "Did you expect a 'dict'?", True),),
-    "upper": ((types.NoneType, "Did you expect a 'str'?", True),),
-    "lower": ((types.NoneType, "Did you expect a 'str'?", True),),
-    "strip": ((types.NoneType, "Did you expect a 'str'?", True),),
-    "split": ((types.NoneType, "Did you expect a 'str'?", True),),
-    "sort": ((types.NoneType, "Did you expect a 'list'?", True),),
-    "pop": ((types.NoneType, "Did you expect a 'list' or 'dict'?", True),),
 })