How to use a raw string for latex with a string variable?

Question

I was trying to use latex in one of my labels for a matplotlib plot. As shown on matplotlib website, using an r in the beginning of the string helps me do that. as shown below:

plt.title(r'$\alpha > \beta$')

But now, I want to replace the inside of the string ('$\alpha > \beta$') with a variable. I tried some combinations but it doesn't work.

Any help is appreciated, Thanks a lot!

Quang Hoang · Accepted Answer · 2021-02-10 04:07:08Z

1

From Python 3.6+, you can use an f-string, which also works with a raw string:

u = 5
plt.title(rf'$\alpha > {u}$')

Otherwise, the str.format function would also work:

plt.title(r'$\alpha > {}$'.format(u))

Output:

answered Feb 10, 2021 at 4:07

Quang Hoang

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1 Comment

Eric Over a year ago

This doesn't seem to work anymore. Both of these approaches give a ParseException: Expected end of text, found '$' (at char 0), (line:1, col:1) for me, while it does work without putting the variable in....

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