python print 字体大小怎么调_Matplotlib-打印大小，如何调整大小？

我正在尝试从我创建的绘图中删除空白，请参见下面的照片：

可以看到，右边和底部都有一个大白点，怎么解决？，请按我的脚本执行：fig = plt.figure(figsize=(7,7))

ax1 = plt.subplot2grid((4,3), (0,0),)

ax2 = plt.subplot2grid((4,3), (1,0),)

ax3 = plt.subplot2grid((4,3), (0,1),)

ax4 = plt.subplot2grid((4,3), (1,1),)

data = self.dframe[i]

tes = print_data(data, self.issues, self.color, self.type_user)

tes.print_top(data=data, top=10, ax=ax1, typegraph="hbar", problem=self.issues[i], tone=self.color[i])

tes.print_top(data=data, top=10, ax=ax2, typegraph="prod_bar", problem=self.issues[i], tone=self.color[i])

tes.print_top(data=data, top=10, ax=ax3, typegraph="reg_hbar", problem=self.issues[i], tone=self.color[i])

tes.print_top(data=data, top=10, ax=ax4, typegraph=self.type_user, problem=self.issues[i], tone=self.color[i])

problem = self.issues[i]

plt.tight_layout()

name = problem + str('.PNG')

plt.close(fig)

fig.savefig(name)

任何帮助都将不胜感激