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From: Ian Kelly <ian.g.kelly@gmail.com>
Date: Fri, 6 Jan 2012 12:50:43 -0700
Subject: Re: how to get id(function) for each function in stack?
To: dmitrey <dmitrey15@gmail.com>
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On Fri, Jan 6, 2012 at 12:29 PM, dmitrey <dmitrey15@gmail.com> wrote:
> Python build-in function sum() has no attribute func_code, what should
> I do in the case?

Built-in functions and C extension functions have no code objects, and
for that reason they also do not exist in the stack.  There is no way
to find sum() in the Python stack, because it isn't there.