How to generate random number by given string in python?

Question

As hash function gives different values in different python interpreters , Is there a more stable one in python ?

Update one:

"stable" means that the function should give the same number when the string is same anytime. hash can't do it .

I want a function like :

def generate_random_number_by_string(string:str)->int:
    pass

For example , generate_random_number_by_string("16") should be the same in anytime .

Can you define "stable"? Why does this matter to your application? — ggorlen
– ggorlen, Commented Oct 22, 2020 at 3:10
Hi , @ggorlen . "stable" means that the function should give the same number when the string is same anytime. hash can't do it . — DachuanZhao
– DachuanZhao, Commented Oct 22, 2020 at 3:19

Cory Nezin · Accepted Answer · 2020-10-22 03:22:09Z

7

You can use a hash from hashlib. For example:

import hashlib
int(hashlib.sha256(b'yourstring').hexdigest(), base=16)

answered Oct 22, 2020 at 3:22

Cory Nezin

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3 Comments

@DachuanZhao Yes, sha256 hash gives totally uniform distribution of its value.

@DachuanZhao Code above gives uniform distribution of integers in range from 0 to 2^256-1.

@Arty It's enough . Thanks very much ~~~