[Python-Dev] co_firstlineno on decorated functions

[Nick Coghlan]

On Tue, Aug 3, 2010 at 1:40 PM, Eli Bendersky <eliben at gmail.com> wrote:
> The first print out correctly specifies the line "def foo" is in. However,
> the second one points to the line with "@dummydecorator" instead of "def
> bar". [Python 2.6]
>
> The side-effects of this behavior can be easily seen in the output of
> modules like trace and profile. Would you say it's normal, or could this be
> considered a bug?

Since the decorator is as much a part of the function definition as
the def line is, I would say that it is correct (the name says
"firstlineno", not "deflineno"). inspect.getsource() and friends
actually rely on this behaviour, so changing it really isn't an
option.

However, that does mean *using* it as though it always points to the
def line is incorrect, suggesting there are related bugs in trace and
profile.

Cheers,
Nick.

-- 
Nick Coghlan   |   ncoghlan at gmail.com   |   Brisbane, Australia