Copy more attributes from controller callables to partial wrappers

src/milla/dispatch/routing.py

@@ -94,10 +94,17 @@ class Router(object):
                     urlvars = match.groupdict()
                     urlvars.update(vars)
                     func = functools.partial(controller, **urlvars)
-                    if hasattr(func, '__name__'):
-                        func.__name__ = controller.__name__
-                    if hasattr(func, '__doc__'):
-                        func.__doc__ = controller.__doc__
+                    # Work around for Python Issue 3445 for older versions
+                    for attr in functools.WRAPPER_ASSIGNMENTS:
+                        try:
+                            value = getattr(controller, attr)
+                        except AttributeError:
+                            pass
+                        else:
+                            setattr(func, attr, value)
+                    for attr in functools.WRAPPER_UPDATES:
+                        getattr(func, attr).update(getattr(controller,
+                                                           attr, {}))
                     self._cache[path_info] = func
                     return func