B906: Add visit_Bytes, visit_Num and visit_Str to the list of ignored visit_* functions (#338)

Author: AlexWaygood

README.rst

@@ -312,6 +312,14 @@ MIT
 Change Log
 ----------
 
+Future
+~~~~~~~~~
+
+* B906: Add ``visit_Bytes``, ``visit_Num`` and ``visit_Str`` to the list of ``visit_*``
+  functions that are ignored by the B906 check. The ``ast.Bytes``, ``ast.Num`` and
+  ``ast.Str`` nodes are all deprecated, but may still be used by some codebases in
+  order to maintain backwards compatibility with Python 3.7.
+
 23.1.20
 ~~~~~~~~~
 

bugbear.py

@@ -1018,6 +1018,11 @@ def check_for_b906(self, node: ast.FunctionDef):
                 "MatchStar",
                 "Nonlocal",
                 "TypeIgnore",
+                # These ast nodes are deprecated, but some codebases may still use them
+                # for backwards-compatibility with Python 3.7
+                "Bytes",
+                "Num",
+                "Str",
             )
         ):
             return

tests/b906.py

@@ -84,3 +84,17 @@ def visit_Nonlocal():
 
 def visit_TypeIgnore():
     ...
+
+
+# These nodes are deprecated, but some codebases may still use them
+# for backwards-compatibility with Python 3.7
+def visit_Bytes():
+    ...
+
+
+def visit_Num():
+    ...
+
+
+def visit_Str():
+    ...