Handy function to label barplots

autolabel barplots

def autolabel(ax,rects,text,fmt=None,below=False,offset_fraction=0.05):
    for rect,t in zip(rects,text):
        height = rect.get_height()+rect.get_y()
        if below:
            ax.text(rect.get_x()+rect.get_width()/2., (1-offset_fraction)*height, t,
                    ha='center', va='top', **fmt)            
        else:
            ax.text(rect.get_x()+rect.get_width()/2., (1+offset_fraction)*height, t,
                    ha='center', va='bottom', **fmt)