importnumpyasnpimportmatplotlib.pyplotaspltfig=plt.figure()x=np.linspace(-np.pi,np.pi,100)y=2*np.sin(x)ax=fig.add_subplot(2,2,1)ax.set_title('centered spines')ax.plot(x,y)ax.spines['left'].set_position('center')ax.spines['right'].set_color('none')ax.spines['bottom'].set_position('center')ax.spines['top'].set_color('none')ax.spines['left'].set_smart_bounds(True)ax.spines['bottom'].set_smart_bounds(True)ax.xaxis.set_ticks_position('bottom')ax.yaxis.set_ticks_position('left')ax=fig.add_subplot(2,2,2)ax.set_title('zeroed spines')ax.plot(x,y)ax.spines['left'].set_position('zero')ax.spines['right'].set_color('none')ax.spines['bottom'].set_position('zero')ax.spines['top'].set_color('none')ax.spines['left'].set_smart_bounds(True)ax.spines['bottom'].set_smart_bounds(True)ax.xaxis.set_ticks_position('bottom')ax.yaxis.set_ticks_position('left')ax=fig.add_subplot(2,2,3)ax.set_title('spines at axes (0.6, 0.1)')ax.plot(x,y)ax.spines['left'].set_position(('axes',0.6))ax.spines['right'].set_color('none')ax.spines['bottom'].set_position(('axes',0.1))ax.spines['top'].set_color('none')ax.spines['left'].set_smart_bounds(True)ax.spines['bottom'].set_smart_bounds(True)ax.xaxis.set_ticks_position('bottom')ax.yaxis.set_ticks_position('left')ax=fig.add_subplot(2,2,4)ax.set_title('spines at data (1, 2)')ax.plot(x,y)ax.spines['left'].set_position(('data',1))ax.spines['right'].set_color('none')ax.spines['bottom'].set_position(('data',2))ax.spines['top'].set_color('none')ax.spines['left'].set_smart_bounds(True)ax.spines['bottom'].set_smart_bounds(True)ax.xaxis.set_ticks_position('bottom')ax.yaxis.set_ticks_position('left')# ----------------------------------------------------defadjust_spines(ax,spines):forloc,spineinax.spines.items():iflocinspines:spine.set_position(('outward',10))# outward by 10 pointsspine.set_smart_bounds(True)else:spine.set_color('none')# don't draw spine# turn off ticks where there is no spineif'left'inspines:ax.yaxis.set_ticks_position('left')else:# no yaxis ticksax.yaxis.set_ticks([])if'bottom'inspines:ax.xaxis.set_ticks_position('bottom')else:# no xaxis ticksax.xaxis.set_ticks([])fig=plt.figure()x=np.linspace(0,2*np.pi,100)y=2*np.sin(x)ax=fig.add_subplot(2,2,1)ax.plot(x,y,clip_on=False)adjust_spines(ax,['left'])ax=fig.add_subplot(2,2,2)ax.plot(x,y,clip_on=False)adjust_spines(ax,[])ax=fig.add_subplot(2,2,3)ax.plot(x,y,clip_on=False)adjust_spines(ax,['left','bottom'])ax=fig.add_subplot(2,2,4)ax.plot(x,y,clip_on=False)adjust_spines(ax,['bottom'])plt.show()