fix: avoid to mutate metaclasses

azmeuk · azmeuk · commit 7edc107e9a87 · 2025-02-06T15:57:24.000+01:00
diff --git a/mutmut/__main__.py b/mutmut/__main__.py
@@ -68,7 +68,7 @@
 # TODO: hash of function. If hash changes, retest all mutants as mutant IDs are not stable
 
 
-NEVER_MUTATE_FUNCTION_NAMES = {'__getattribute__', '__setattr__'}
+NEVER_MUTATE_FUNCTION_NAMES = {'__getattribute__', '__setattr__', '__new__'}
 NEVER_MUTATE_FUNCTION_CALLS = {'isinstance', 'len'}
 CLASS_NAME_SEPARATOR = 'ǁ'
 
