Convert latex to text with pandocfilters

convert.py

"""Remove latex blocks and replace math functiosn with (MATH)

- How to debug:
    pandoc -t json aaa.tex | python ./this-file.py | pandoc -f json -t plain

- How to use:
    pandoc -s aaa.tex --filter=./this-file.py -o out.text
"""
from pandocfilters import toJSONFilter, Str


def abc(key, value, format, _):
    if key == 'RawBlock':
        if value[0] == 'latex':
            return []
    elif key == 'Math':
        return Str('(MATH)')


if __name__ == "__main__":
    toJSONFilter(abc)