Re: [Python-ideas] pdb to support running modules

[Nick Coghlan]

On 10 January 2018 at 05:18, Alexander Belopolsky
 wrote:
> On Thu, Jan 4, 2018 at 8:15 PM, Guido van Rossum  wrote:
>> Sounds uncontroversial, this can just be done via bugs.python.org.
>>
>
> .. and it has been proposed there over 7 years ago:
> .

Aye, I linked Mario's patch up to that as a higher level tracking
issue - the `pdb -m` support is available in 3.7.0a4 :)

He's also now submitted comparable patches for a couple of other
modules which I'll aim to get to before 3.7.0b1

Cheers,
Nick.

P.S. For anyone curious as to what the delay has been, the problem is
that the *public* runpy API isn't quite flexible enough to support the
way some of these other modules want to run code, and even if we had
added such an API, they likely would have required refactoring in
order to use it.

Mario's patches have instead been taking advantage of the fact that
these are stdlib modules we're updating, and hence we can get away
with using *private* runpy APIs for now, and then based on these
conversions, we can look at what features the public runpy API would
need in order for us to migrate them away from using those private
interfaces.

-- 
Nick Coghlan   |   ncogh...@gmail.com   |   Brisbane, Australia
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Re: [Python-ideas] pdb to support running modules

[Alexander Belopolsky]

On Thu, Jan 4, 2018 at 8:15 PM, Guido van Rossum  wrote:
> Sounds uncontroversial, this can just be done via bugs.python.org.
>

.. and it has been proposed there over 7 years ago:
.
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Re: [Python-ideas] pdb to support running modules

[Guido van Rossum]

Sounds uncontroversial, this can just be done via bugs.python.org.

On Thu, Jan 4, 2018 at 4:50 PM, Lisa Roach  wrote:

> I also +1 this idea, I don't see a reason why we couldn't run pdb on the
> modules.
>
> On Thu, Jan 4, 2018 at 12:29 PM, Devin Jeanpierre 
> wrote:
>
>> On Thu, Jan 4, 2018 at 1:56 PM, Mario Corchero 
>> wrote:
>> > Since PEP 338 we can run python modules as a script via `python -m
>> > module_name` but there is no way to run pdb on those (AFAIK).
>> >
>> > The proposal is to add a new argument "-m" to the pdb module to allow
>> users
>> > to run `python -m pdb -m my_module_name`
>>
>> Mega +1, I always, always want this, for every command that itself can
>> invoke other python scripts. There is prior art in that this feature
>> was already added to cProfile as well:
>> https://bugs.python.org/issue21862
>>
>> -- Devin
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>
>
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-- 
--Guido van Rossum (python.org/~guido)
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Re: [Python-ideas] pdb to support running modules

[Lisa Roach]

I also +1 this idea, I don't see a reason why we couldn't run pdb on the
modules.

On Thu, Jan 4, 2018 at 12:29 PM, Devin Jeanpierre 
wrote:

> On Thu, Jan 4, 2018 at 1:56 PM, Mario Corchero 
> wrote:
> > Since PEP 338 we can run python modules as a script via `python -m
> > module_name` but there is no way to run pdb on those (AFAIK).
> >
> > The proposal is to add a new argument "-m" to the pdb module to allow
> users
> > to run `python -m pdb -m my_module_name`
>
> Mega +1, I always, always want this, for every command that itself can
> invoke other python scripts. There is prior art in that this feature
> was already added to cProfile as well:
> https://bugs.python.org/issue21862
>
> -- Devin
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Re: [Python-ideas] pdb to support running modules

[Devin Jeanpierre]

On Thu, Jan 4, 2018 at 1:56 PM, Mario Corchero  wrote:
> Since PEP 338 we can run python modules as a script via `python -m
> module_name` but there is no way to run pdb on those (AFAIK).
>
> The proposal is to add a new argument "-m" to the pdb module to allow users
> to run `python -m pdb -m my_module_name`

Mega +1, I always, always want this, for every command that itself can
invoke other python scripts. There is prior art in that this feature
was already added to cProfile as well:
https://bugs.python.org/issue21862

-- Devin
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[Python-ideas] pdb to support running modules

[Mario Corchero]

Hello All,

Since PEP 338  we can run
python modules as a script via `python -m module_name` but there is no
way to run pdb on those (AFAIK).

The proposal is to add a new argument "-m" to the pdb module to allow
users to run `python -m pdb -m my_module_name`

This is especially useful when working on cli tools that use
entrypoints in setup.py, as there is no other way to run them.

I have a possible implementation here
https://github.com/python/cpython/pull/4752

I quite often use pdb with scripts, being able to run modules would be
useful as well. What do you think?

Regards!
Mario
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