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I create a messagebar using this

iface.messageBar().pushWidget(iface.messageBar().createMessage( 'Hello World' ), Qgis.Info)

How can I add, say, 5 spaces between Hello and World?

I could use '<pre>Hello World</pre>' to output exactly what I type but this changes the font of the messagebar. I would like to retain the same default font.

Is there another way?

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Qgis interface Message bar convert text into HTML for display. Multiples spaces are considered as only one in HTML, unless they are non-breaking spaces &nbsp;.

So, you can achieve your five blank spaces text with :

iface.messageBar().pushMessage("", f"Hello{'&nbsp;' * 5}World", Qgis.Info, -1)

Explanation

'&nbsp;' * 5 gives '&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

f"my string with curly brackets" it's the new format way since Python 3.6

So with f"Hello{'&nbsp;' * 5}World", I create this string "Hello&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;World" or Hello     World.


See :

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