How to write a program that finds what a hash is?

Question

Python

How to make a program that decides what the hash is before its "transformation" (Ps I know that there can be different values ​​\u200b\u200band be the same hashes)

if (generate_hash_word(word) == 0x712e241608d44a98):
        print(flag)
        return 1

(I think the code above will help)
I have enough thoughts on how to do this (the word can be of unlimited size)

Answer 1

Reread your question again, and think, is it clear? What does "before his transformation" mean?
If you need to find a hash (as I understand it, it doesn’t matter to you which hashing algorithm will be used) from a string - https://python-scripts.com/md5-sha1 - then here
If you need to get the original string from a hash - then if you please, that's why it's a hash.