python plot 标签的粗体文本

Question

I want to use bold text for the labels of my python plot. I tried this:

plt.xlabel("$\mathrm{\\mathbf{\delta\\langle r^2\\rangle^{226,A}[fm^2]}}$",fontsize=50,fontweight='bold')

But the output looks weird (see the attached picture). The letters get bold, but the numbers and the symbols stay the same. How can I get everything in bold? Thank you!

Answer 1

Using weight instead of fontweight .

Update:

I found that using \boldsymbol will work with the Greek letter.

\boldsymbol{\mathbf{text}}