matplotlib交互式小部件布局问题

import matplotlib.pyplot as plt
from ipywidgets import interact, widgets

@interact(x=(0, 10), y=(0, 10))
def plot_graph(x, y):
    # 绘制图形的代码

grid_layout = widgets.GridspecLayout(2, 2)
grid_layout[0, 0] = widgets.Button(description='Button 1')
grid_layout[0, 1] = widgets.Button(description='Button 2')
grid_layout[1, 0] = widgets.Button(description='Button 3')
grid_layout[1, 1] = widgets.Button(description='Button 4')

plt.subplot(2, 1, 1)
plt.plot(x_data, y_data)
plt.subplot(2, 1, 2)
plt.grid(True)
plt.show()