Python Don'；t在子批次中显示标签

在下面的子图中，我希望在图例中显示标签；因此，我需要设置标签，但我不希望显示它们。也就是说，我只想要图例，我不希望在饼图旁边有标签名称。我该怎么做

这是我的密码：

my_labels = ['food', 'music', 'clothes']

fig = pylab.figure()
fig.text(0.4,0.95,"Consumption by Region")

ax1 = fig.add_subplot(2,2,1)
ax1.pie([1,2,3], labels = my_labels)
ax1.text(0.6, 1, "North West")

ax2 = fig.add_subplot(2,2,2)
ax2.pie([6,4,3], labels = my_labels)
ax2.text(0.6, 1, "North East")

ax3 = fig.add_subplot(2,2,3)
ax3.pie([1,4,3], labels = my_labels)
ax3.text(0.6, 1, "South West")

ax4 = fig.add_subplot(2,2,4)
ax4.pie([9,1,3], labels = my_labels)
ax4.text(0.6, 1, "South East")

pylab.legend(title="Legend", loc=(-1.5,0.9))

pylab.show()

产生：

---

如果不希望在单个饼图中显示标签，则不应在打印时调用标签，而应仅在定义图例时调用：

import pylab

my_labels = ['food', 'music', 'clothes']

fig = pylab.figure()
fig.text(0.4,0.95,"Consumption by Region")

ax1 = fig.add_subplot(2,2,1)
ax1.pie([1,2,3])
ax1.text(0.6, 1, "North West")

ax2 = fig.add_subplot(2,2,2)
ax2.pie([6,4,3])
ax2.text(0.6, 1, "North East")

ax3 = fig.add_subplot(2,2,3)
ax3.pie([1,4,3])
ax3.text(0.6, 1, "South West")

ax4 = fig.add_subplot(2,2,4)
ax4.pie([9,1,3])
ax4.text(0.6, 1, "South East")

pylab.legend(my_labels, title="Legend", loc=(-1.5,0.9))

pylab.show()

这导致：