duck typing?
AKA latent typing or, "if it walks like a duck and quacks like a duck, it must be a duck." Or, more pythonically:
if hasattr(ob,"quack") and hasattr(ob,"duckwalk"):
# it's a duckThis is as distinct from both 'if isinstance(ob,Duck)' and 'if implements(ob,IDuck)'. That is, "duck typing" is determining an object's type by inspection of its method/attribute signature rather than by explicit relationship to some type object.
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