But grepping and piping could work I assume?

On Tue, Sep 20, 2016 at 2:41 AM Chris Angelico <ros...@gmail.com> wrote:

> On Tue, Sep 20, 2016 at 9:27 AM, Xavier Combelle
> <xavier.combe...@gmail.com> wrote:
> > I find the idea of tracking the dependencies in the script might be a
> > good idea.
> > However, magically downloading without warning the user is in my point
> > of view for sure a bad idea.
> > I would far prefer that pip could scan a script to know the dependencies.
> > (A little bit like a requirements.txt but inside the script)
> > A special comment or docstring would do the job. for example
> >
> > """
> > pip_requirements:
> >     - requests >0.0
> >     - asyncio
> > """"
> >
> > to run the script it would be at the first time a  two step process
> > for example:
> >
> > python3 -m pip --script-dependencies [--user] my_script.py
> > python3 my_script.py
>
> How about this:
>
> python3 -m pip install -r requirements.txt
> python3 my_script.py
>
> That already works, but the requirements have to be in a separate text
> file, not in the .py file itself. If you want a docstring-based
> solution, I'd piggy-back it on requirements.txt, and use the same
> format (eg if the docstring starts "pip_requirements:", the rest of it
> is a requirements.txt file). Downside: Docstrings can be easily parsed
> and read *IF* you can successfully import the module. Which you can't,
> if you still need all those dependencies. So there would have to be
> some kind of import hook that crafts a dummy package with an infinite
> number of dummy subpackages, to allow all forms of import to trivially
> succeed - "import X", "import X.Y", "from X.Y import Z", etc. This may
> well be more hassle than it's worth.
>
> ChrisA
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