[FIX] function introspection attributes

Introspection attributes on function and methods were originally
prefixed with func_ or im_ e.g. im_class or func_name. For coherence with the
rest of the data model, Python 3 added dunder attributes (__func__,
__code__) and removed the old style, the dunder attributes were
backported to Python 2.6.

Use dunder attributes everywhere we're currently using func_* or im_*
attributes.

Fixers:
    lib2to3.fixes.fix_funcattrs
    lib2to3.fixes.fix_methodattrs

#8530

odoo/http.py

@@ -966,8 +966,8 @@ def routing_map(modules, nodb_only, converters=None):
                     routing = dict(type='http', auth='user', methods=None, routes=None)
                     methods_done = list()
                     # update routing attributes from subclasses(auth, methods...)
-                    for claz in reversed(mv.im_class.mro()):
-                        fn = getattr(claz, mv.func_name, None)
+                    for claz in reversed(mv.__self__.__class__.mro()):
+                        fn = getattr(claz, mv.__name__, None)
                         if fn and hasattr(fn, 'routing') and fn not in methods_done:
                             methods_done.append(fn)
                             routing.update(fn.routing)

odoo/tools/cache.py

@@ -217,8 +217,8 @@ def log_ormcache_stats(sig=None, frame=None):
 
 def get_cache_key_counter(bound_method, *args, **kwargs):
     """ Return the cache, key and stat counter for the given call. """
-    model = bound_method.im_self
-    ormcache = bound_method.clear_cache.im_self
+    model = bound_method.__self__
+    ormcache = bound_method.clear_cache.__self__
     cache, key0, counter = ormcache.lru(model)
     key = key0 + ormcache.key(model, *args, **kwargs)
     return cache, key, counter

odoo/tools/misc.py

@@ -471,7 +471,7 @@ class profile(object):
         def wrapper(*args, **kwargs):
             profile = cProfile.Profile()
             result = profile.runcall(f, *args, **kwargs)
-            profile.dump_stats(self.fname or ("%s.cprof" % (f.func_name,)))
+            profile.dump_stats(self.fname or ("%s.cprof" % (f.__name__,)))
             return result
 
         return wrapper