Only enable 'browser' default renderer if default browser can be found

jonmmease · jonmmease · commit 356f31e36c71 · 2019-06-03T10:20:13.000-04:00
diff --git a/plotly/io/_renderers.py b/plotly/io/_renderers.py
@@ -437,7 +437,13 @@ def show(fig, renderer=None, validate=True, **kwargs):
 else:
     # If ipython isn't available, try to display figures in the default
     # browser
-    default_renderer = 'browser'
+    import webbrowser
+    try:
+        webbrowser.get()
+        default_renderer = 'browser'
+    except webbrowser.Error:
+        # Default browser could not be loaded
+        pass
 
 renderers.render_on_display = True
 renderers.default = default_renderer
