[Tutor] what instance type is a function object?
Kent Johnson
kent37 at tds.net
Thu Feb 22 23:09:44 CET 2007
Adam Pridgen wrote:
> Thanks in advance for your help.
> I am trying to pickle a class, but I want to exclude function objects
> for obvious reasons. How do I determine if a python object is a
> function, specifically when using isinstance()? I am not sure what a
> type or instance a Python 'function' originates from.
You can either use type(f) where f is some function or import types and
use types.FunctionType.
You could also use the builtin function callable() but that will be true
for any callable (e.g. an instance of a class that has a __call__()
method) not just for functions.
Kent
>
> The below code throws an exception, because function is not a type.
> Presently I am attempting to do the following:
>
> def __getstate__(
> ret_val = {}
> for key in self.__dict__:
> if not isinstance(self.__dict__[key], function): pass
> # do assignment here
>
> Thanks again, Adam
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