convert_latex_in_md.py

from urllib import parse
import re
import argparse

def return_md_image(latex_string):
    return '![' + latex_string + '](https://render.githubusercontent.com/render/math?' + parse.urlencode({'math': latex_string.replace('$', '')}) + '&mode=inline)'

def convert_md(input_file, outputfile):
    with open(input_file, 'r') as ifile:
        content = ''.join(ifile.readlines())

    p = re.compile(' (\$.*?\$)')
    latexes = p.findall(content)

    for ls in latexes:
        content = content.replace(ls, return_md_image(ls))

    with open(outputfile, 'w') as f:
        f.write(content)

parser = argparse.ArgumentParser()
parser.add_argument('--input', help = 'input file path')
parser.add_argument('--output', help = 'output file path')

args = parser.parse_args()

convert_md(args.input, args.output)