https://stackoverflow.com/questions/77807596/ansiblevaulterror-decryption-failed-no-vault-secrets-were-found-that-could-dec

session.txt

$ cat toto.yml 
$ANSIBLE_VAULT;1.1;AES256
32353335396261646339343466646261306239633333366365663862353062653632653633656162
6464663731366136633131646531303063366332633734370a653464373830666666343930393564
39393162396564356336336339666666383432323738376566626434393461376334656664396339
6461363530383238340a376333306631383762323134303931393938653837633263386664633830
61383664303562386131306234333238396434316636343230633231386138613264383566363432
6165626266626437653735383835663564313162633265643964

$ cat testtoto.py 
#!/usr/bin/env python3

from ansible.constants import DEFAULT_VAULT_ID_MATCH
from ansible.parsing.vault import VaultLib, VaultSecret

vault = VaultLib([(DEFAULT_VAULT_ID_MATCH, VaultSecret('toto'.encode()))])
print(vault.decrypt(open('toto.yml').read()))

$ ./testtoto.py 
b'soft:\n  user: toto\n  password: rototo\n'