遵循这个例子:
import numpy as np
import matplotlib.pyplot as plt
fig = plt.figure()
for i, label in enumerate(('A', 'B', 'C', 'D')):
ax = fig.add_subplot(2,2,i+1)
ax.text(0.05, 0.95, label, transform=ax.transAxes,
fontsize=16, fontweight='bold', va='top')
plt.show()
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我得到这个输出:

为什么我的标签正常重量,而文档显示这应该创建粗体字母A,B,C,D?
一个额外的信息,它给了我这个警告:
Warning (from warnings module):
File "C:\Python27\lib\site-packages\matplotlib\font_manager.py", line 1228
UserWarning)
UserWarning: findfont: Could not match :family=Bitstream Vera Sans:style=italic:variant=normal:weight=bold:stretch=normal:size=x-small. Returning C:\Python27\lib\site-packages\matplotlib\mpl-data\fonts\ttf\Vera.ttf
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