matplotlib put legend next to line graph code example

Example 1: matplotlib legend out of plot

ax.legend(loc='upper center', bbox_to_anchor=(0.5, 1.05),
          ncol=3, fancybox=True, shadow=True)

Example 2: python no label in legend matplot

ax.plot(randn(1000).cumsum(), 'k.', label='_nolegend_')