Single test for a class and all its subclasses?

[Anthra Norell]

class C: ...
class C2 (C): ...


# What I want to do:

if x.__class__ in (C, C2):
   do_something_with (x)

# Requires an exhaustive genealogy, which normally is impractical and often impossible


# Another approach

class_tree = inspect.getclasstree ((x.__class__,))
if classtree_contains (class_tree, C):
   do_something_with (x)

# An awful lot of activity for a simple task


I'd expect a attribute name like __class__, but haven't found one in the doc and my doc-search time-out setting for simple things like this is about one hour. 

Frederic

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