Optimize imports and re-enable recursive submodule imports

This removes remaining type annotations and delays import of validators
until datatype construction

Author: Jon M. Mease

codegen/__init__.py

@@ -161,6 +161,13 @@ def perform_codegen():
             (f"._{node.name_undercase}", node.name_datatype_class)
         )
 
+        # submodule import
+        if node.child_compound_datatypes:
+            path_to_datatype_import_info.setdefault(key, []).append(
+                (f"plotly.graph_objs{node.parent_dotpath_str}",
+                 node.name_undercase)
+            )
+
     # ### Write plotly/graph_objs/graph_objs.py ###
     # This if for backward compatibility. It just imports everything from
     # graph_objs/__init__.py

codegen/datatypes.py

@@ -79,16 +79,9 @@ def build_datatype_py(node):
 
     # Imports
     # -------
-    buffer.write('from typing import *\n')
-    buffer.write('from numbers import Number\n')
     buffer.write(
         f'from plotly.basedatatypes import {node.name_base_datatype}\n')
 
-    # ### Import type's validator package with rename ###
-    buffer.write(
-        f'from plotly.validators{node.parent_dotpath_str} import '
-        f'{undercase} as v_{undercase}\n')
-
     # Write class definition
     # ----------------------
     buffer.write(f"""
@@ -165,7 +158,7 @@ def {subtype_node.name_property}(self, val):
     # {literal_node.name_property}
     # {'-' * len(literal_node.name_property)}
     @property
-    def {literal_node.name_property}(self) -> {prop_type}:
+    def {literal_node.name_property}(self):
         return self._props['{literal_node.name_property}']\n""")
 
     # ### Private properties descriptions ###
@@ -174,13 +167,13 @@ def {literal_node.name_property}(self) -> {prop_type}:
     # property parent name
     # --------------------
     @property
-    def _parent_path_str(self) -> str:
+    def _parent_path_str(self):
         return '{node.parent_path_str}'
 
     # Self properties description
     # ---------------------------
     @property
-    def _prop_descriptions(self) -> str:
+    def _prop_descriptions(self):
         return \"\"\"\\""")
 
     buffer.write(node.get_constructor_params_docstring(indent=8))
@@ -199,6 +192,11 @@ def __init__(self""")
     buffer.write(f"""
         super().__init__('{node.name_property}', **kwargs)
 
+        # Import validators
+        # -----------------
+        from plotly.validators{node.parent_dotpath_str} import (
+            {undercase} as v_{undercase}) 
+
         # Initialize validators
         # ---------------------""")
     for subtype_node in subtype_nodes:

plotly/graph_objs/__init__.py

@@ -1,35 +1,67 @@
 from ._violin import Violin
+from plotly.graph_objs import violin
 from ._table import Table
+from plotly.graph_objs import table
 from ._surface import Surface
+from plotly.graph_objs import surface
 from ._scatterternary import Scatterternary
+from plotly.graph_objs import scatterternary
 from ._scatterpolargl import Scatterpolargl
+from plotly.graph_objs import scatterpolargl
 from ._scatterpolar import Scatterpolar
+from plotly.graph_objs import scatterpolar
 from ._scattermapbox import Scattermapbox
+from plotly.graph_objs import scattermapbox
 from ._scattergl import Scattergl
+from plotly.graph_objs import scattergl
 from ._scattergeo import Scattergeo
+from plotly.graph_objs import scattergeo
 from ._scattercarpet import Scattercarpet
+from plotly.graph_objs import scattercarpet
 from ._scatter3d import Scatter3d
+from plotly.graph_objs import scatter3d
 from ._scatter import Scatter
+from plotly.graph_objs import scatter
 from ._sankey import Sankey
+from plotly.graph_objs import sankey
 from ._pointcloud import Pointcloud
+from plotly.graph_objs import pointcloud
 from ._pie import Pie
+from plotly.graph_objs import pie
 from ._parcoords import Parcoords
+from plotly.graph_objs import parcoords
 from ._ohlc import Ohlc
+from plotly.graph_objs import ohlc
 from ._mesh3d import Mesh3d
+from plotly.graph_objs import mesh3d
 from ._histogram2dcontour import Histogram2dContour
+from plotly.graph_objs import histogram2dcontour
 from ._histogram2d import Histogram2d
+from plotly.graph_objs import histogram2d
 from ._histogram import Histogram
+from plotly.graph_objs import histogram
 from ._heatmapgl import Heatmapgl
+from plotly.graph_objs import heatmapgl
 from ._heatmap import Heatmap
+from plotly.graph_objs import heatmap
 from ._contourcarpet import Contourcarpet
+from plotly.graph_objs import contourcarpet
 from ._contour import Contour
+from plotly.graph_objs import contour
 from ._choropleth import Choropleth
+from plotly.graph_objs import choropleth
 from ._carpet import Carpet
+from plotly.graph_objs import carpet
 from ._candlestick import Candlestick
+from plotly.graph_objs import candlestick
 from ._box import Box
+from plotly.graph_objs import box
 from ._bar import Bar
+from plotly.graph_objs import bar
 from ._area import Area
+from plotly.graph_objs import area
 from ._layout import Layout
+from plotly.graph_objs import layout
 from ._frame import Frame
 from ._figure import Figure
 from ._figurewidget import FigureWidget