PyQt Digest, Vol 194, Issue 31

Bryce Beagle bryce.beagle at gmail.com
Wed Sep 23 23:28:55 BST 2020 

We've found using the resource files easier than using paths when
distributing with PyInstaller. Also the built-in translation support for
files is convenient.

On Wed, Sep 23, 2020 at 2:19 PM <pyqt-request at riverbankcomputing.com> wrote:

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> Today's Topics:
>
>    1. Re: PyQt6 and SIP v6 Snapshots Available (Detlev Offenbach)
>    2. Re: PyQt6 and SIP v6 Snapshots Available (Phil Thompson)
>    3. Re: PyQt6 and SIP v6 Snapshots Available (Grzegorz Bokota)
>    4. Re: PyQt6 and SIP v6 Snapshots Available (Patrick Stinson)
>    5. Re: PyQt6 and SIP v6 Snapshots Available (Phil Thompson)
>    6. Re: PyQt6 and SIP v6 Snapshots Available (Phil Thompson)
>    7. Re: PyQt6 and SIP v6 Snapshots Available (Eli Schwartz)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Wed, 23 Sep 2020 19:33:57 +0200
> From: Detlev Offenbach <detlev at die-offenbachs.de>
> To: pyqt at riverbankcomputing.com
> Subject: Re: PyQt6 and SIP v6 Snapshots Available
> Message-ID: <01b56d5c-2770-c72b-5aa2-a9ac016c64ee at die-offenbachs.de>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Hi Phil,
>
> the download page says, that 'pyrcc' has been removed. What will be the
> successor? The eric-ide sources use resource files and thus depends on
> pyrcc.
>
> Detlev
>
> Am 20.09.20 um 18:06 schrieb Phil Thompson:
> > PyQt6 and SIP v6 snapshots are now available on their respective
> > download pages.
> >
> > Before you get too excited, PyQt6 currently builds against Qt5 but
> > does include the planned incompatibilities with PyQt5 (summarised on
> > the download page).
> >
> > Phil
>
> --
> Detlev Offenbach
> detlev at die-offenbachs.de
>
>
>
> ------------------------------
>
> Message: 2
> Date: Wed, 23 Sep 2020 18:42:40 +0100
> From: Phil Thompson <phil at riverbankcomputing.com>
> To: Detlev Offenbach <detlev at die-offenbachs.de>
> Cc: pyqt at riverbankcomputing.com
> Subject: Re: PyQt6 and SIP v6 Snapshots Available
> Message-ID: <e78d21ccd509a15812a655ceb63e2e0c at riverbankcomputing.com>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> On 23/09/2020 18:33, Detlev Offenbach wrote:
> > Hi Phil,
> >
> > the download page says, that 'pyrcc' has been removed. What will be
> > the successor? The eric-ide sources use resource files and thus
> > depends on pyrcc.
>
> I don't plan a successor as I don't see the point of resource files in a
> Python context.
>
> What do you use it for?
>
> Phil
>
>
> ------------------------------
>
> Message: 3
> Date: Wed, 23 Sep 2020 21:08:26 +0200
> From: Grzegorz Bokota <g.bokota at mimuw.edu.pl>
> To: Phil Thompson <phil at riverbankcomputing.com>
> Cc: Detlev Offenbach <detlev at die-offenbachs.de>, pyqt
>         <pyqt at riverbankcomputing.com>
> Subject: Re: PyQt6 and SIP v6 Snapshots Available
> Message-ID:
>         <CADUBGeQA_GNQQg0mb1cqfqr=YPUxjcV0_+PrKxHHiJ=
> Q5tnSLw at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> napari use pyrcc to compile svg icons into a python file:
>
>
> https://github.com/napari/napari/blob/79500fe4ae0a8c3d0838d7330f4ac9a706b1bb9e/napari/resources/build_icons.py#L218-L223
>
> It means that it should be rewritten using QtSvg to run with PyQt6?
>
> Grzegorz Bokota
>
>
> śr., 23 wrz 2020 o 19:43 Phil Thompson <phil at riverbankcomputing.com>
> napisał(a):
>
> > On 23/09/2020 18:33, Detlev Offenbach wrote:
> > > Hi Phil,
> > >
> > > the download page says, that 'pyrcc' has been removed. What will be
> > > the successor? The eric-ide sources use resource files and thus
> > > depends on pyrcc.
> >
> > I don't plan a successor as I don't see the point of resource files in a
> > Python context.
> >
> > What do you use it for?
> >
> > Phil
> >
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 4
> Date: Wed, 23 Sep 2020 11:15:01 -0800
> From: Patrick Stinson <patrickkidd at gmail.com>
> To: Phil Thompson <phil at riverbankcomputing.com>
> Cc: Detlev Offenbach <detlev at die-offenbachs.de>, PyQt mailing list
>         <pyqt at riverbankcomputing.com>
> Subject: Re: PyQt6 and SIP v6 Snapshots Available
> Message-ID: <023F6970-DAE4-4414-A6D0-22F9BAE733EB at gmail.com>
> Content-Type: text/plain;       charset=us-ascii
>
> Phil,
>
> Could you explain what makes the Qt resource system obsolete in a PyQt6
> context? The Qt resource system itself seems to play an essential role in
> the toolkit. If you think it does not provide an essential function, then I
> am intrigued to hear more.
>
> But if you do think it plays an essential role, then perhaps you are
> suggesting that resource files are preprocessed into C++ source via rcc
> instead of python source via a pyrcc6? If so, I could see that for
> pyqtdeploy projects but how would one import Qt resources when running a
> PyQt app from the command line during development?
>
> -Patrick
>
> > On Sep 23, 2020, at 9:42 AM, Phil Thompson <phil at riverbankcomputing.com>
> wrote:
> >
> > On 23/09/2020 18:33, Detlev Offenbach wrote:
> >> Hi Phil,
> >> the download page says, that 'pyrcc' has been removed. What will be
> >> the successor? The eric-ide sources use resource files and thus
> >> depends on pyrcc.
> >
> > I don't plan a successor as I don't see the point of resource files in a
> Python context.
> >
> > What do you use it for?
> >
> > Phil
>
>
>
> ------------------------------
>
> Message: 5
> Date: Wed, 23 Sep 2020 22:10:08 +0100
> From: Phil Thompson <phil at riverbankcomputing.com>
> To: Grzegorz Bokota <g.bokota at mimuw.edu.pl>
> Cc: pyqt <pyqt at riverbankcomputing.com>
> Subject: Re: PyQt6 and SIP v6 Snapshots Available
> Message-ID: <79ef2b5499a8d289f8f63fda70ad11c3 at riverbankcomputing.com>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> On 23/09/2020 20:08, Grzegorz Bokota wrote:
> > napari use pyrcc to compile svg icons into a python file:
> >
> >
> https://github.com/napari/napari/blob/79500fe4ae0a8c3d0838d7330f4ac9a706b1bb9e/napari/resources/build_icons.py#L218-L223
> >
> > It means that it should be rewritten using QtSvg to run with PyQt6?
>
> Probably along with lots of other things.
>
> Phil
>
>
> ------------------------------
>
> Message: 6
> Date: Wed, 23 Sep 2020 22:14:43 +0100
> From: Phil Thompson <phil at riverbankcomputing.com>
> To: Patrick Stinson <patrickkidd at gmail.com>
> Cc: PyQt mailing list <pyqt at riverbankcomputing.com>
> Subject: Re: PyQt6 and SIP v6 Snapshots Available
> Message-ID: <0d5734dafd164b239554118ac8b4199f at riverbankcomputing.com>
> Content-Type: text/plain; charset=US-ASCII; format=flowed
>
> On 23/09/2020 20:15, Patrick Stinson wrote:
> > Phil,
> >
> > Could you explain what makes the Qt resource system obsolete in a
> > PyQt6 context?
>
> https://www.riverbankcomputing.com/static/Docs/pyqtdeploy/pyrcc.html
>
> > The Qt resource system itself seems to play an
> > essential role in the toolkit. If you think it does not provide an
> > essential function, then I am intrigued to hear more.
>
> If there is something that you cannot do with existing Python techniques
> then I'll happily reconsider.
>
> > But if you do think it plays an essential role, then perhaps you are
> > suggesting that resource files are preprocessed into C++ source via
> > rcc instead of python source via a pyrcc6? If so, I could see that for
> > pyqtdeploy projects but how would one import Qt resources when running
> > a PyQt app from the command line during development?
>
> What is the requirement for creating Qt resources in the first place?
>
> Phil
>
>
> ------------------------------
>
> Message: 7
> Date: Wed, 23 Sep 2020 17:17:42 -0400
> From: Eli Schwartz <eschwartz at archlinux.org>
> To: pyqt at riverbankcomputing.com
> Subject: Re: PyQt6 and SIP v6 Snapshots Available
> Message-ID: <15332fc6-cf67-5699-9847-ac7fde90ad94 at archlinux.org>
> Content-Type: text/plain; charset="utf-8"
>
> On 9/23/20 1:42 PM, Phil Thompson wrote:
> > On 23/09/2020 18:33, Detlev Offenbach wrote:
> >> Hi Phil,
> >>
> >> the download page says, that 'pyrcc' has been removed. What will be
> >> the successor? The eric-ide sources use resource files and thus
> >> depends on pyrcc.
> >
> > I don't plan a successor as I don't see the point of resource files in a
> > Python context.
> >
> > What do you use it for?
> >
> > Phil
>
> +1
>
> qresource files are intended to embed random data files into
> single-executable style software distributions, to reduce the number of
> moving parts. This is as opposed to doing proper installation management
> unix style, and is of limited use on Windows too, as long as people ship
> Qt itself as shared libraries necessitating a directory structure.
>
> This is all fine and well for C++ programs where qresources get
> statically linked into the executable itself, reducing the number of
> files to be installed.
>
> What's the point of it for generating *.py files with that data? You end
> up with multiple files to distribute anyway.
>
> pkg_resources.resource_filename() and its modern equivalent, the stdlib
> importlib.resources, allows you to access real files through standard
> pythonic mechanisms, without the wrapper abstractions and without an the
> rcc compiler. There's no need to handle data blobs as python inline
> strings, try to byte-compile something that doesn't really byte-compile
> well, etc.
>
> The resulting files are easily introspectable and modifiable in the
> built software bundle (because they are the original files) and only get
> read at the time of use.
>
> Really -- what is the big attraction to using qresources in python?
>
> --
> Eli Schwartz
> Arch Linux Bug Wrangler and Trusted User
>
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> End of PyQt Digest, Vol 194, Issue 31
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