Bug report
This issue was initially reported by the user @ain-soph at the PR #18145. I was able to reproduce the error with the provided code and decided to formalize the issue here while I work on it.
Code for reproduction:
import matplotlib.pyplot as plt
import matplotlib
plt.figure(figsize=(6, 5))
plt.plot(range(11), color="0.9")
msg = (r"Normal Text. $Text\ in\ math\ mode:\ "
r"\int_{0}^{\infty } x^2 dx$")
plt.text(1, 7, msg, size=12, font='Arial') # math_fontfamily='cm'
plt.show()And the outcome is:
....
File "c:\repos\matplotlib\matplotlib\lib\matplotlib\mathtext.py", line 431, in _parse_cached
else _api.check_getitem(
File "c:\repos\matplotlib\matplotlib\lib\matplotlib\_api\__init__.py", line 187, in check_getitem
raise ValueError(
ValueError: None is not a valid value for fontset; supported values are 'cm', 'dejavuserif', 'dejavusans', 'stix', 'stixsans', 'custom'
Matplotlib version: 3.4.1.post563+g679ca172e.d20210428
Bug report
This issue was initially reported by the user @ain-soph at the PR #18145. I was able to reproduce the error with the provided code and decided to formalize the issue here while I work on it.
Code for reproduction:
And the outcome is:
Matplotlib version: 3.4.1.post563+g679ca172e.d20210428