Transform text to math monospace

mathmono.py

#!/usr/bin/env python3

import sys

def mathmono(s):
    res = ''
    for c in s:
        cn = ord(c)
        if cn >= ord('a') and cn <= ord('z'):
            cn += 0x1D68A - ord('a')
        elif cn >= ord('A') and cn <= ord('Z'):
            cn += 0x1D670 - ord('A')
        elif cn >= ord('0') and cn <= ord('9'):
            cn += 0x1D7F6 - ord('0')  
        elif cn == 0x20:
            cn = 0x205F
        res += chr(cn)
    return res

if (len(sys.argv) > 1):
    for arg in sys.argv[1:-1]:
        print(mathmono(arg), end=' ')
    print(mathmono(sys.argv[-1]))
else:
    for line in sys.stdin:
        print(mathmono(line), end='')