[PyQt] Mysterious type error: with example script now

[Hans-Peter Jansen]

Hi Gottfried,

On Sonntag, 14. Mai 2017 10:20:14 Gottfried Müller wrote:
> and additional informations: I am using Manjaro with python 3.6.1, qt5
> 5.8.0, pyqt5 5.8.2. With the simple script in the attachment I get the
> type error at my computer.

While I cannot offer a fix for the obvious issue in pyqtSignal, I can offer a 
workaround. See attached script.

It is slightly modified in order to test with Python2 as well...

One remark: triggering the signal in the constructor of your Viewer class is 
related to testing, I guess. I would consider this a source of trouble for 
production code, given, it triggers before the signal handler is connected...

Cheers,
Pete
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