[QGIS-Developer] plugin reload fail

Richard Duivenvoorde rdmailings at duif.net
Sat Oct 13 01:14:37 PDT 2018

On 10/12/2018 06:20 PM, Ing. Pierluigi De Rosa wrote:
> Dear all,
> I have a simple problem.
> I'm porting the opeNoise plugin [1] to 3.x
> I'm not the author plugin but I'm experiencing that the plugin reload
> fails. It tels me that the plugin have been reloaded but the changes are
> non applied. Even if I deactivate and than activate the plugin the same
> results (no changes detected).
> The only way is to restart the software any time losing too much time.

How sure are you that it is not reloaded?
Can you check by writing some message with a version number?

Normally writing the


should be enough. Only thing I could think off is that you do not
disconnect the QActions (though I'm not even sure if that is really needed).

Also note that if you reload your plugin AFTER an exception, often you
end up with a situation where QGIS still has (parts) of the plugin in
memory while also loading a new version of your plugin, so sometimes
showing 2 versions of your pluginbutton/toolbar etc. I think only a QGIS
restart works then.

Another think I've had is that mixing up an already installed version
with the one I'm developing (because the symbolic link was gone, or I
was actually working in another profile then I thought or.... other
silly things)



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