[QGIS-Developer] Qt Model-View updates blocked when Python console not open

[Peter Devoy]

Just a little update; it is the fact I am using print() to output
debug information upon each request which is allowing the UI to
repaint.  Also, it seems that opening and closing the Python console
once is enough.

Peter

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On 4 October 2017 at 20:53, Peter Devoy <peter at 3xe.co.uk> wrote:
> Hi all
>
> In my plugin I have extended QAbstractListModel to create a list of
> objects; each object in the list has a 'url' property containing the
> URL of an API resource.  When the user selects a feature in main QGIS
> interface, each object in the list makes a HTTP request to its URL and
> updates its properties from the response data.
>
> Changes in the objects' properties are reflected in a QListView.  E.g.
> a  property 'status'  is set to 'WARN' if the HTTP request fails --
> this is reflected in the QListView by the respective list item's icon
> turning yellow.
>
> If I have the Python console open in QGIS the QListView items update
> as the ListModel's objects update. However, if the Python console is
> not open, the plugin's UI thread appears to be blocked until each item
> in the list has completed its changes and all the items update at
> once; please can anyone recommend a way to avoid this?
>
> I have been developing on QGIS 2.1X.
>
> Kind regards
>
>
> Peter