better handling of figure generation

Davide-sd · Apr 2, 2024 · 586bea7 · 586bea7
1 parent c6c8e4e
commit 586bea7
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/spb/backends/bokeh/bokeh.py b/spb/backends/bokeh/bokeh.py
@@ -273,7 +273,13 @@ def _init_cyclers(self):
     @property
     def fig(self):
         """Returns the figure."""
-        if len(self.renderers) > 0 and len(self.renderers[0].handles) == 0:
+        if (
+            (len(self.renderers) > 0) and
+            (
+                (self.renderers[0] and len(self.renderers[0].handles) == 0)
+                or (self.renderers[0] is None)
+            )
+        ):
             # if the backend was created without showing it
             self.draw()
         return self._fig

diff --git a/spb/backends/k3d/k3d.py b/spb/backends/k3d/k3d.py
@@ -205,7 +205,13 @@ def __init__(self, *args, **kwargs):
     @property
     def fig(self):
         """Returns the figure."""
-        if len(self.renderers) > 0 and len(self.renderers[0].handles) == 0:
+        if (
+            (len(self.renderers) > 0) and
+            (
+                (self.renderers[0] and len(self.renderers[0].handles) == 0)
+                or (self.renderers[0] is None)
+            )
+        ):
             # if the backend was created without showing it
             self._process_renderers()
         return self._fig