Quick Start with Lets-Plot

import numpy as np

from lets_plot import *

LetsPlot.setup_html()

np.random.seed(12)
data = dict(
    cond=np.repeat(['A','B'], 200),
    rating=np.concatenate((np.random.normal(0, 1, 200), np.random.normal(1, 1.5, 200)))
)

ggplot(data, aes(x='rating', fill='cond')) + ggsize(500, 250) \
  + geom_density(color='dark_green', alpha=.7) + scale_fill_brewer(type='seq')