MatPlotLib中如何设置坐标轴主刻度线和次刻度线在图的里面呢

ax.tick_params(direction='in',width=0.5,length=2,color='g')只能设置个别的刻度线能在图像里面，像这样我想让所有的刻度线都在坐标轴里面该怎么设置呢

ax.tick_params(axis='both',which='both',direction='in')

plt.rcParams['xtick.direction'] = 'in'
plt.rcParams['ytick.direction'] = 'in'