删除matplotlib中饼图周围的空格

import matplotlib.pyplot as plt

sizes = [15, 30, 45, 10]  # 饼图各部分的大小
labels = ['A', 'B', 'C', 'D']  # 饼图各部分的标签

plt.pie(sizes, labels=labels)

plt.gca().set_aspect('equal')  # 设置图形的纵横比为1，使饼图为正圆形
plt.subplots_adjust(left=0, right=1, top=1, bottom=0)  # 调整子图的边界框，使饼图填满整个图像

import matplotlib.pyplot as plt

sizes = [15, 30, 45, 10]
labels = ['A', 'B', 'C', 'D']

plt.pie(sizes, labels=labels)
plt.gca().set_aspect('equal')
plt.subplots_adjust(left=0, right=1, top=1, bottom=0)
plt.show()