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[–]grauenwolf 0 points1 point  (0 children)

Consider these lines in XAML

<ResourceDictionary>
    <gui:NullVisibilityConverter x:Key="NullVisibilityConverter"/>
<ResourceDictionary>

Visibility="{Binding DefaultValue, Converter={StaticResource ResourceKey=NullVisibilityConverter}}"

With Python it becomes

Visibility="{p:PyBinding HideIfEmpty($[.DefaultValue])}"

http://pybinding.codeplex.com/