How to write a subscripted hyphen within matplotlib math text without TeX?

Question

TeX compiles $A_{\textrm{C-C}}$ displaying a hyphen in the subscript. How can I produce the same result in matplotlib without using TeX? The command \textrm is from the amstext package and produces an unknown symbol error in the default math text.

I tried the following code (resulting in an unknown symbol error):

#!/usr/bin/env python

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.axis([0, 2, 0, 2])
ax.text(1, 1, r'$A_{\textrm{C-C}}$')
plt.show()

Answer 1

Inserting a Unicode hyphen (u"\u2010") produced the correct text:

#!/usr/bin/env python

import matplotlib.pyplot as plt

fig = plt.figure()
ax = fig.add_subplot(111)
ax.axis([0, 2, 0, 2])

ax.text(
    0.1, 1.2, r'$A_\mathrm{C' + u"\u002D" + r'C}$' + 
    ' unicode hyphen-minus U+002D')
ax.text(
    0.1, 1.0, r'$A_\mathrm{C-C}$' + 
    ' ASCII hyphen')
ax.text(
    0.1, 0.8, r'$A_\mathrm{C' + u"\u2010" + r'C}$' +
    ' unicode hyphen U+2010 produces a result similar to textrm')
plt.show()

Plot produced by the script

Answer 2

Try this:

import matplotlib.pyplot as plt
fig = plt.figure()
ax = fig.add_subplot(111)
ax.axis([0, 2, 0, 2])
ax.text(1, 1, r'$A_{C-C}$')
plt.show()

Hope it helps
from here

Answer 3

As of matplotlib version 3.8.0 you can simply use \text for upright text inside math text (or use \mathrm if you want a minus sign instead of a hyphen):

import matplotlib.pyplot as plt
fig, ax = plt.subplots(figsize=(3, 2))
ax.text(0.4, 0.6, r'$A_\text{C-C}$', fontsize='xx-large')
ax.text(0.4, 0.4, r'$A_\mathrm{C-C}$', fontsize='xx-large')