Re: [PATCH v3] Handle Python 3.11 deprecation of PySys_SetPath and Py_SetProgramName

[Kevin Buettner via Gdb-patches <gdb-patches@sourceware.org>]

On Mon, 18 Jul 2022 11:49:48 -0400
Simon Marchi <simark@simark.ca> wrote:

> > @@ -1849,6 +1855,24 @@ show_python_dont_write_bytecode (struct ui_file *file, int from_tty,
> >  		value);
> >  }
> >  
> > +/* Return value to assign to PyConfig.write_bytecode or, when
> > +   negated (via !), Py_DontWriteBytecodeFlag.  Py_DontWriteBytecodeFlag
> > +   is deprecated in Python 3.12.  */
> > +
> > +static int
> > +python_write_bytecode ()
> > +{
> > +  int wbc = 0;
> > +
> > +  if (python_dont_write_bytecode == AUTO_BOOLEAN_AUTO)
> > +    wbc = (!python_ignore_environment
> > +	    && getenv ("PYTHONDONTWRITEBYTECODE") != nullptr) ? 0 : 1;  
> 
> I think it predates your patch (so, orthogonal), but the Python doc says:
> 
>   If this is set to a non-empty string, Python won't try to write .pyc
>   files on the import of source modules.
> 
> So I think we would need a "non-empty string" check here?

I agree.

I've pushed the v3 deprecation patch and have posted a new/separate
patch which fixes the problem you spotted.  It also fixes the set/show
python dont-write-bytecode command documentation.

See:

https://sourceware.org/pipermail/gdb-patches/2022-July/190912.html

Kevin