Error - plotly import

[capelastegui]

Broken CI in 841544d , most likely due to conflict in latest plotly version

import plotly as py
py.subplots # Works with plotly <= 4.5.2
# plotly >= 4.9.0 crashes with 
#  AttributeError: 'module' object has no attribute 'subplots'

[capelastegui]

Looks like we need to explicitly import subplots, for some reason:

import plotly
plotly.subplots
Traceback (most recent call last):
  File "/Users/pec21/PycharmProjects/anticipy/virtual3/lib/python3.6/site-packages/IPython/core/interactiveshell.py", line 3319, in run_code
    exec(code_obj, self.user_global_ns, self.user_ns)
  File "<ipython-input-3-9304b4589615>", line 1, in <module>
    plotly.subplots
AttributeError: module 'plotly' has no attribute 'subplots'
import plotly.subplots
plotly.subplots
Out[5]: <module 'plotly.subplots' from '/Users/pec21/PycharmProjects/anticipy/virtual3/lib/python3.6/site-packages/plotly/subplots.py'>