import numpy as np
from lets_plot import *
LetsPlot.setup_html()

n = 100
np.random.seed(42)
x = np.random.choice(['a', 'b', 'c'], size=n)
y = np.random.normal(size=n)
ggplot({'x': x, 'y': y}, aes(x='x', y='y')) + geom_boxplot(whisker_width=0.2)