added links to px.data and px.colors in API doc

Author: emmanuelle

doc/apidoc/plotly.express.rst

@@ -1,7 +1,7 @@
 .. _px:
 
 `plotly.express`: high-level interface for data visualization
-================================
+=============================================================
 
 The `plotly.express <https://plot.ly/python/plotly-express/>`_ module is
 plotly's high-level API for rapid figure generation. ::
@@ -49,4 +49,13 @@ plotly's high-level API for rapid figure generation. ::
     imshow
 
 
+`plotly.express` submodules
+---------------------------
+
+
+.. toctree::
+   :maxdepth: 1
+
+   generated/plotly.data.rst
+   generated/plotly.express.colors.rst
 

packages/python/plotly/plotly/express/colors/__init__.py

@@ -0,0 +1,14 @@
+"""For a list of colors available in `plotly.express.colors`, please see
+
+* the `tutorial on discrete color sequences <https://plotly.com/python/discrete-color/#color-sequences-in-plotly-express>`_
+* the `list of built-in continuous color scales <https://plotly.com/python/builtin-colorscales/>`_
+"""
+
+from __future__ import absolute_import
+from plotly.colors import *
+
+__all__ = ['cyclical',
+           'diverging',
+           'sequential',
+           'qualitative',
+        ]

packages/python/plotly/plotly/express/data.py

@@ -1,2 +1,12 @@
 from __future__ import absolute_import
 from plotly.data import *
+
+__all__ = [
+        'carshare',
+        'election',
+        'election_geojson',
+        'gapminder',
+        'iris',
+        'tips',
+        'wind'
+        ]