I currently have the following;

y = time_h
time_box = Box(y=y,name='Time (hours)',boxmean=True,marker=Marker(color='green'),boxpoints='all',jitter=0.5,pointpos=-2.0
)
layout = Layout(title='Time Box',
)
fig = Figure(data=Data([time_box]), layout=layout)
plotly.image.save_as(fig, os.path.join(output_images, 'time_box.png'))

This renders the following graph:

The box is too wide and I haven't been able to find anything in the docs.

You can also mess around with the boxgap (and boxgroupgap for when there are multiple boxes at different x locations, like here: https://plot.ly/python/box-plots/#Grouped-Box-Plot) property inside Layout. More details here: Plotly Python Reference - Box Gap

Make sure that you have version 1.3.1 or higher. $ pip install plotly --upgrade

import plotly.plotly as py
from plotly.graph_objs import *data = Data([Box(y=[0, 1, 1, 2, 3, 5, 8, 13, 21],boxpoints='all',jitter=0.3,pointpos=-1.8)
])layout = Layout(boxgap=0.5
)fig = Figure(data=data, layout=layout)
plot_url = py.plot(fig, filename='box-plot-with-gap')

https://plot.ly/~chris/3048

Some more examples:

boxgap=0 and boxgroupgap=0:

boxgap=0.25 and boxgroupgap=0:

boxgap=0 and boxgroupgap=0.25:

boxgap=0.25 and boxgroupgap=0.25:

It's also helpful to play around with these parameters in the Workspace, where you can modify every parameter of the graphs: