code: def set_password(self, service, username, password):
          
          # encrypt the password
          password_encrypted = _win_crypto.encrypt(password.encode('utf-8'))
          # encode with base64
          password_base64 = base64.encodestring(password_encrypted)
          # encode again to unicode
          password_saved = password_base64.decode('ascii')
  
          # store the password
          key_name = self._key_for_service(service)
          hkey = winreg.CreateKey(winreg.HKEY_CURRENT_USER, key_name)
          winreg.SetValueEx(hkey, username, 0, winreg.REG_SZ, password_saved)
docs: Write the password to the registry