raise error if failed to get/import webbrowser

Author: emilykl

plotly/io/_renderers.py

@@ -557,10 +557,11 @@ def show(fig, renderer=None, validate=True, **kwargs):
 
         webbrowser.get()
         default_renderer = "browser"
-    except Exception:
+    except Exception as e:
         # Many things could have gone wrong
         # There could not be a webbrowser Python module,
         # or the module may be a dumb placeholder
+        raise e
         pass
 
 renderers.render_on_display = True