𝘊𝘰𝘯𝘷𝘦𝘳𝘵 𝘱𝘭𝘢𝘪𝘯 𝘵𝘦𝘹𝘵 𝘵𝘰 𝘶𝘯𝘪𝘤𝘰𝘥𝘦 𝘪𝘵𝘢𝘭𝘪𝘤

#!/usr/bin/python3
import sys
str = ' '.join(sys.argv[1:])
def bold(input_text):
    chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"
    bold_chars = "𝘈𝘉𝘊𝘋𝘌𝘍𝘎𝘏𝘐𝘑𝘒𝘓𝘔𝘕𝘖𝘗𝘘𝘙𝘚𝘛𝘜𝘝𝘞𝘟𝘠𝘡𝘢𝘣𝘤𝘥𝘦𝘧𝘨𝘩𝘪𝘫𝘬𝘭𝘮𝘯𝘰𝘱𝘲𝘳𝘴𝘵𝘶𝘷𝘸𝘹𝘺𝘻"
    output = ""
    for character in input_text:
        if character in chars:
            output += bold_chars[chars.index(character)]
        else:
            output += character
    return output
print (bold(str))