Merge pull request #5258 from plotly/fix-default-renderer-when-ipython-installed

Fix issue with default renderer when `ipython` is installed

Author: emilykl

plotly/io/_renderers.py

@@ -485,7 +485,7 @@ def show(fig, renderer=None, validate=True, **kwargs):
         )
 
     default_renderer = env_renderer
-elif ipython:
+elif ipython and ipython.get_ipython():
     # Try to detect environment so that we can enable a useful
     # default renderer
     if not default_renderer:

tests/test_io/test_renderers.py

@@ -33,6 +33,13 @@ def fig1(request):
     )
 
 
+def test_default_renderer():
+    """
+    The default renderer should be 'browser'.
+    """
+    assert pio.renderers.default == "browser"
+
+
 # JSON
 # ----
 def test_json_renderer_mimetype(fig1):