matplotlib画图，求教一下坐标轴刻度文字大小无法调整是什么原因？

[jiezouluxian]

求教一下坐标轴刻度文字大小无法调整是什么原因？
我用的命令是：
host.tick_params(axis="left", labelsize=14)
par1.tick_params(axis="y", labelsize=14)
该怎么修改？

from mpl_toolkits.axes_grid1 import host_subplot
import mpl_toolkits.axisartist as AA

host = host_subplot(111, axes_class=AA.Axes)
pyplot.subplots_adjust(right=0.9)
par1 = host.twinx()
par2 = host.twinx()
offset = 60
new_fixed_axis = par2.get_grid_helper().new_fixed_axis
par2.axis["right"] = new_fixed_axis(loc="right",
                                    axes=par2,
                                    offset=(offset, 0))
par1.axis["right"].toggle(all=True)
par2.axis["right"].toggle(all=True)
host.set_xlim(0, 30)
host.set_ylim(-150, 150)

host.set_xlabel('Time(s)')
host.set_ylabel('Torque(N.m)')
par1.set_ylabel('Vehicle speed(km/h)')
par2.set_ylabel("Pedal degree(%)")

p1, = host.plot([0, 1, 2], [0, 1, 2],'ko-',ms=8,markevery=20, markerfacecolor='none', label="Engine torque(N.m)")
p11, = host.plot([0, 1, 2], [4, 5, 6], 'kx-',ms=8,markevery=20,markerfacecolor='none',label="Motor torque(N.m)")
p2, = par1.plot([0, 1, 2], [0, 3, 2], '^-',ms=8, markevery=20, markerfacecolor='none',label="Temperature")
p3, = par2.plot([0, 1, 2], [50, 30, 15], 's-',ms=8, markevery=20, markerfacecolor='none',label="Velocity")

par1.set_ylim(0, 60)
par2.set_ylim(0, 100)

host.legend(fontsize=12)

host.axis["left"].label.set_color(p1.get_color())
host.axis["left"].label.set_fontsize(14)
host.axis["bottom"].label.set_fontsize(14)
par1.axis["right"].label.set_color(p2.get_color())
par1.axis["right"].label.set_fontsize(14)
par2.axis["right"].label.set_color(p3.get_color())
par2.axis["right"].label.set_fontsize(14)
host.tick_params(axis="left", labelsize=14)
par1.tick_params(axis="y", labelsize=14)
# for tick in host.xaxis.get_major_ticks():
#     tick.label.set_fontsize(30)
# host.xaxis.set_tick_params(size=14)
# pyplot.xticks(range(0,30,5),fontsize=30)
# pyplot.yticks(range(0,200,50),fontsize=30)
pyplot.show()