如何在matplotlib中使用pyplot.arrow或patches.Arrow？

Question

如果我想使用箭头/箭头函数来绘制箭头而不是轴线，我如何让线/箭头显示出来？示例如下：

import matplotlib.pyplot as plt
import matplotlib.patches as pts

plt.ion()
ax = plt.axes()
ax.set(xlim=[0,1],ylim=[0,1],autoscale_on=False,clip_on=False)
ax.set(frame_on=False,xticks=[],yticks=[])
pts.Arrow(0,0,1,0,width=0.05)
plt.arrow(0,0,0,1,shape='right',lw=3,fill=True)
ax.text(1,0,'functionalization',
        verticalalignment='top',
        horizontalalignment='center')
ax.text(0,1,'void space/structure')
plt.draw()

pts.Arrow不绘制任何内容，而plt.arrow绘制一条线，但不绘制箭头。

Answer 1

plt.arrow(0,0,0,1, shape='full', lw=3, length_includes_head=True, head_width=.01)