Alan Franzoni wrote:
Hello,
I'd like to have a system which lets me do certain actions if the
duck-type of a certain objects matches what I expect, i.e. I'd like to
have a formalization of what it's sometimes done through getattr()
calls:
if getattr(myobj, "somemethod", None) is not None:
myobj.somemethod(somevalue)
[...]
I'd like to do a kind of runtime-check for signatures. Of course there
couldn't be an absolute certainty of interface implementation, because
a runtime dynamic proxy method (accepting *args and **kwargs in its
signature, as an example) might just fool my signature check.
When you signature check, do you mean counting the number of arguments,
or actually checking argument types?
~Ethan~
--
http://mail.python.org/mailman/listinfo/python-list
