[Python-ideas] Passive tracing of function objects (was: Efficient debug logging)

[C Anthony Risinger]

On Wed, Feb 15, 2017 at 10:45 AM, C Anthony Risinger <anthony at xtfx.me>
wrote:

> On Tue, Feb 14, 2017 at 3:55 PM, Barry <barry at barrys-emacs.org> wrote:
>>
>>
>> The point is that the cost of creating the msg argument can be very high.
>>
>> At the point that logging decides to skip output it is to late to save
>> the cost of creating the arg tuple.
>>
>
> Awhile back I was playing with some code for the purpose of adding debug
> logs "after the fact":
>
> https://github.com/anthonyrisinger/retrospect/blob/master/README.rst
>
> I'm not trying to plug it (It's POC, broken, and Python 2) but maybe there
> is some value because I was trying to solve a similar problem of fast and
> easy debugging and logs.
>

I meant to note that I did in fact use this (plus a wrapper that would take
an ENV var with the function to target) a few times to inspect code running
deep in Django without ever editing any Django code. It also works for
inspecting code you can't edit, say modules installed globally into /usr.

-- 

C Anthony
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