Capture caller frame of napari.run() when starting the console.

Should fix napari/napari#4098
Replaces napari/napari#4140, and see discussion there as well
Needs napari/napari#4212

napari_console/qt_console.py

@@ -13,6 +13,7 @@
 from qtpy.QtGui import QColor
 
 
+from napari.utils.naming import CallerFrame
 
 def str_to_rgb(arg):
     """Convert an rgb string 'rgb(x,y,z)' to a list of ints [x,y,z]."""
@@ -54,6 +55,8 @@ def str_to_rgb(arg):
             # fallback to the pre-3.8 default of Selector
             asyncio.set_event_loop_policy(WindowsSelectorEventLoopPolicy())
 
+def _not_napari(frame):
+            return frame.f_globals.get("__name__", '').startswith('napari')
 
 class QtConsole(RichJupyterWidget):
     """Qt view for the console, an integrated iPython terminal in napari.
@@ -128,6 +131,7 @@ def __init__(self, viewer: 'napari.viewer.Viewer'):
             raise ValueError(
                 'ipython shell not recognized; ' f'got {type(shell)}'
             )
+        self._capture()
         # Add any user variables
         user_variables = user_variables or {}
         self.push(user_variables)
@@ -140,6 +144,13 @@ def __init__(self, viewer: 'napari.viewer.Viewer'):
         # TODO: Try to get console from jupyter to run without a shift click
         # self.execute_on_complete_input = True
 
+    def _capture(self):
+        """
+        Capture variable from first enclosing scope that is not napari
+        """
+        with CallerFrame(_not_napari) as c:
+            self.push(dict(c.namespace))
+
     def _update_theme(self, event=None):
         """Update the napari GUI theme."""
         from napari.utils.theme import get_theme, template