is it possible to create an object by its name in the run time

[Ryan(Yang) Zhang]

> Hi all,
>        I wonder if it is possible to create an object of func, class or
> method in the run time by it's name? To make it more clear, let me show
you
> an example: I parsed the python code and found a function with name 'len'.
I
> want to know if it is a build-in func(where can I look up?). If so, ignore
> it otherwise I want to find out which module is it defined in. All I know
is
> the name (which is a string), and all the modules that this program have
> imported. In the same way, I also need to process the class and methods
> call. I wonder if it is possible? I will appreciate your help very much!!
>
> -Ryan
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>