how to update a Columns widget on urwid

Question

I am starting to use urwid and one of the simple things I want to do is have two columns and being able to update one of the columns to display a different widget

I tried the following code but I keep getting an error

urwid.container.ColumnsError: added content invalid <Filler box widget <Text flow widget 'other test'>>

I just want to be able to replace

from urwid import *

cols = Columns([Filler(Text('test')), Filler(Text('test'))])
loop = MainLoop(cols)

cols.contents[0] = Filler(Text('other test'))
# also tried .append just for trying, same result

loop.run()

I am aware I could change the Text widget with ".set_text()" but that is not what I am trying to do I want to replace it with other widget.

I am starting to think this is clearly not the way it should be done but can't find anything about this.

thanks in advance.

score 3 · Accepted Answer · answered Dec 06 '18 at 13:42

3

You're pretty close! :)

When updating the contents list, you need to provide a tuple that contains both the widget and an options object (which you can construct with the options() method), like:

cols.contents[0] = (Filler(Text('other test')), cols.options())

See the docs for Columns.contents.

answered Dec 06 '18 at 13:42

Elias Dorneles

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This is totally the answer I was looking for, I forgot about this thread but little after I asked this question I realized exactly what you mention. @elias thanks for the help :D – academo Jan 11 '19 at 13:39
@academo i figured, hihi! my pleasure :) – Elias Dorneles Jan 11 '19 at 14:32

how to update a Columns widget on urwid

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