Python Latex Library

I often work with groups of materials and my file/materials are named as alphanumeric strings. Is there a library to turn a string like r"Mxene - Ti3C2" to latex styled r"Mxene - Ti$_mathrm{3}$C$_mathrm{2}$"?

I usually use a dictionary but going through every name is a hassle and prone to error because materials can always be added or removed from the study.

I know that I can use str.maketrans() to generate subscripts but I haven’t had very consistent results using the output with matplotlib so I’d much rather use latex.

Answer

I’ve ultimately created this solution in case anyone else needs it. Since my problem is mostly to create subscripts, the following code will look for numbers and replace them with a latex equivalent to create one.

def latexify(s):

    import re
    nums = re.findall(r'd+', s)
    pos = [[m.start(0), m.end(0)] for m in re.finditer(r'd+', s)]
    numpos = list(zip(nums, pos))

    for num, pos in numpos:
        string = f"$_mathrm{{{num}}}$"
        s = s[:pos[0]] + string + s[pos[1]:]
        
        for ind, (n, [p_st, p_end]) in enumerate(numpos):
            if p_st > pos[1]:
                numpos[ind][1][0] += len(string)-len(num)
                numpos[ind][1][1] += len(string)-len(num)
            
            pass
        
    return s

latexify("Ti32C2")

Returns:

'Ti$_\mathrm{32}$C$_\mathrm{2}$'