Adding ygridoff is a good idea I think, for symmetry with xgridoff. On the other hand I'm not sure we need the gridon one since most default templates already display grid lines?

most default templates already display grid lines

I think the idea here is that @joelostblom's new template doesn't, so I like this idea personally.

True, I believe it's only the template I proposed that doesn't have grid lines by default. I think it would be nice with gridon since the three together then covers all possible scenarios (adding or removing one or two grid lines) which makes it feel like a complete modular set, but I can remove it if you think there are too many templates.

Sounds good, I'm convinced now!

@joelostblom if you can find the time, could you please document these templates (at least the new one simple_white) in https://plot.ly/python/templates/? (the source is https://github.com/plotly/plotly.py-docs/blob/master/python/templates.md). You could just add the new template to the figure showing how a chart looks like with the different templates.

@emmanuelle Done! plotly/plotly.py-docs#169

great, merging