title: Using Plotly latest version and getting error : module 'plotly.validators.layout' has no attribute 'ExtendtreemapcolorsValidator'
body: <p>I am writing a code for making a graph and using the latest plotly version. Previously it wasn't working so <strong>I had to downgrade to 3.4.10 version of Plotly</strong> . Still getting this error. Any suggestions would be helpful. TIA!! </p>
  
  <p><code>choromap = go.Figure(data=[data],layout =layout)</code></p>
  
  <p>Used this command for running one of my programs and got this as an error.</p>
  
  <pre><code>---------------------------------------------------------------------------
  AttributeError                            Traceback (most recent call last)
  &lt;ipython-input-38-5fb62f726a1c&gt; in &lt;module&gt;
  ----&gt; 1 choromap = go.Figure(data=[data],layout =layout)
  
  /opt/anaconda3/lib/python3.7/site-packages/plotly/graph_objs/_figure.py in __init__(self, data, layout, frames, skip_invalid, **kwargs)
      606             is invalid AND skip_invalid is False
      607         """
  --&gt; 608         super(Figure, self).__init__(data, layout, frames, skip_invalid, **kwargs)
      609 
      610     def add_area(
  
  /opt/anaconda3/lib/python3.7/site-packages/plotly/basedatatypes.py in __init__(self, data, layout_plotly, frames, skip_invalid, **kwargs)
      197         # ### Import Layout ###
      198         self._layout_obj = self._layout_validator.validate_coerce(
  --&gt; 199             layout, skip_invalid=skip_invalid
      200         )
      201 
  
  /opt/anaconda3/lib/python3.7/site-packages/_plotly_utils/basevalidators.py in validate_coerce(self, v, skip_invalid)
     2442 
     2443         elif isinstance(v, dict):
  -&gt; 2444             v = self.data_class(v, skip_invalid=skip_invalid)
     2445 
     2446         elif isinstance(v, self.data_class):
  
  /opt/anaconda3/lib/python3.7/site-packages/plotly/graph_objs/__init__.py in __init__(self, arg, angularaxis, annotations, annotationdefaults, autosize, bargap, bargroupgap, barmode, barnorm, boxgap, boxgroupgap, boxmode, calendar, clickmode, coloraxis, colorscale, colorway, datarevision, direction, dragmode, editrevision, extendfunnelareacolors, extendpiecolors, extendsunburstcolors, extendtreemapcolors, font, funnelareacolorway, funnelgap, funnelgroupgap, funnelmode, geo, grid, height, hiddenlabels, hiddenlabelssrc, hidesources, hoverdistance, hoverlabel, hovermode, images, imagedefaults, legend, mapbox, margin, meta, metasrc, modebar, orientation, paper_bgcolor, piecolorway, plot_bgcolor, polar, radialaxis, scene, selectdirection, selectionrevision, separators, shapes, shapedefaults, showlegend, sliders, sliderdefaults, spikedistance, sunburstcolorway, template, ternary, title, titlefont, transition, treemapcolorway, uirevision, updatemenus, updatemenudefaults, violingap, violingroupgap, violinmode, waterfallgap, waterfallgroupgap, waterfallmode, width, xaxis, yaxis, **kwargs)
    97544         self._validators[
    97545             "extendtreemapcolors"
  &gt; 97546         ] = v_layout.ExtendtreemapcolorsValidator()
    97547         self._validators["font"] = v_layout.FontValidator()
    97548         self._validators["funnelareacolorway"] = v_layout.FunnelareacolorwayValidator()
  
  AttributeError: module 'plotly.validators.layout' has no attribute 'ExtendtreemapcolorsValidator'
  </code></pre>