Unique Sessions
Date      2016-06-21 2016-06-29
Name
ABCD             995      4,088
EFGH               8         25
OPEF               1          1

# df is the stacked DataFrame
plot = df.unstack().plot(kind='bar', stacked=True, title="Test")
plot.set_xlabel("Name")
plot.set_ylabel("Num")
plt.savefig('testplot.png', dpi=1000)