None issue fix for static analysis

test/static_analysis/attribute_error.py

@@ -36,3 +36,6 @@ Cls.class_attr_error
 c.instance_attr
 #! attribute-error
 c.instance_attr_error
+
+
+c.something = None

test/static_analysis/try_except.py

@@ -34,6 +34,11 @@ except ImportError:
     pass
 except (NotImplementedError, AttributeError): pass
 
+try:
+    #! attribute-error
+    str.not_existing
+except (TypeError, NotImplementedError): pass
+
 # -----------------
 # detailed except
 # -----------------