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fix the warning message when holoviews and (or) ipywidgets are not installed

Bas Nijholt authored on 03/03/2018 20:00:31
Showing 1 changed files
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@@ -23,7 +23,7 @@ def notebook_extension():
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         holoviews.notebook_extension('bokeh')
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         _plotting_enabled = True
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     except ModuleNotFoundError:
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-        warnings.warn("holoviews and ipywidgets are not installed; plotting "
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+        warnings.warn("holoviews and (or) ipywidgets are not installed; plotting "
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                       "is disabled.", RuntimeWarning)
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     global _async_enabled