Plotting categorical data with pandas and matplotlib

You might find useful mosaic plot from statsmodels. Which can also give statistical highlighting for the variances.

from statsmodels.graphics.mosaicplot import mosaic
plt.rcParams['font.size'] = 16.0
mosaic(df, ['direction', 'colour']);

enter image description here

But beware of the 0 sized cell - they will cause problems with labels.

See this answer for details

You can simply use value_counts on the series:

df['colour'].value_counts().plot(kind='bar')

enter image description here

Related