[Python] Plotly legend next to each subplot, Python

After noticing that there was no answer to this question at the moment, I would like to know if anyone has an idea how to:

1. Have a legends for each subplot.
2. Group legends by name. (Ex: for different subplots, all have the same two curves but with different values).

Here's my Plotly script:

from plotly import tools
import plotly.plotly as py
import plotly.graph_objs as go
import plotly
nom_plot=[]

trace1 = go.Scatter(x=[1, 2, 3], y=[4, 5, 6],name='1',showlegend=True)
nom_plot.append('GRAPH 1')
trace2 = go.Scatter(x=[20, 30, 40], y=[50, 60, 70],name='2',yaxis='y2')
nom_plot.append('GRAPH 2')
trace3 = go.Scatter(x=[300, 400, 500], y=[600, 700, 800],showlegend=False)
nom_plot.append('GRAPH 3')
trace4 = go.Scatter(x=[4000, 5000, 6000], y=[7000, 8000, 9000])
nom_plot.append('GRAPH 4')
trace5 = go.Scatter(x=[20, 30, 40], y=[50, 60, 70])
nom_plot.append('GRAPH 5')

print(trace1)



fig = tools.make_subplots(rows=4, cols=2, subplot_titles=(nom_plot))

fig.append_trace(trace1, 1, 1)
fig['layout']['xaxis1'].update(title='xaxis 1 title')
fig.append_trace(trace2, 1, 1)
fig.append_trace(trace3, 2, 1)
fig.append_trace(trace4, 2, 2)
fig['layout']['yaxis3'].update(title='yaxis 3 title')
fig.append_trace(trace5, 3, 1)


fig['layout']['yaxis2'].update(
overlaying='y1',
side='right',
anchor='x1',
# domain=[0.15, 1],
range=[2, 6],
# zeroline=False,
showline=True,
showgrid=False,
title='yaxis 3 title'
)

fig['layout'].update(height=1000, width=1000, title='Multiple Subplots' +' with Titles')


plotly.offline.plot(fig, filename='multiple-y-subplots6.html')


This what I obtain (Using Plotly Script above):



And this is what I want (Made by Pygal):



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