[PyQt] ANN: PyQt v5.13.1, PyQtWebEngine v5.13.1, SIP v4.19.19 Released

[Marko Luther]

Dear Phil,

> On 13. Sep 2019, at 19:53, Phil Thompson <phil at riverbankcomputing.com> wrote:
> 
> PyQt v5.13.1, PyQtWebEngine v5.13.1 and SIP v4.19.19 have been released. These are all minor functional releases.
> 
> The wheels for PyQt3D, PyQtChart, PyQtDataVisualization and PyQtPurchasing have been updated with Qt v5.13.1.

Thanks for this release! However, I couldn't manage to get the current Qt 5.13.1 on installing PyQt5 on a clean system via

# sudo -H python3 -m pip install PyQt5
Collecting PyQt5
  Using cached https://files.pythonhosted.org/packages/99/72/33de63d443df4fc0c81f83bf573025823b773ef0ba81ea43b89aff3cd626/PyQt5-5.13.1-5.13.1-cp35.cp36.cp37.cp38-abi3-macosx_10_6_intel.whl
Collecting PyQt5_sip<13,>=4.19.19 (from PyQt5)
  Using cached https://files.pythonhosted.org/packages/bf/f5/d1dbebdc5f508c04141e19bc2fdbe9efbd2c0c660c384052f84778a815fd/PyQt5_sip-4.19.19-cp37-cp37m-macosx_10_6_intel.whl
Installing collected packages: PyQt5-sip, PyQt5
Successfully installed PyQt5-5.13.1 PyQt5-sip-4.19.19

Thus I got the PyQt 5.13.1 as requested.

Is there a trick, are those latest Qt libs not yet on pip or have those Qt libs be updated somehow separately?

Thanks for your support,
Marko

> 
> This version of PyQt implements an alternative strategy for tidying up objects when an application exits. By default the new strategy is disabled. To enable it add the following to your script...
> 
>    from PyQt5.QtCore import pyqt5_enable_new_onexit_scheme
> 
>    pyqt5_enable_new_onexit_scheme(True)
> 
> The intention is to make the new scheme the default (and to remove the above function) in PyQt v5.14. I would really appreciate it if people could try out the new scheme (if only for 5 minutes) and let me know if it causes any problems. I'm hoping that 99% won't notice any difference and the remaining 1% will see an improvement.
> 
> Phil
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