code: def acquire_account_for(self, host, owner=None):
          
          # Check whether a matching account pool exists.
          for match, pool in self.pools:
              if match(host) is True:
                  return pool.acquire_account(owner=owner)
  
          # Else, choose an account from the default account pool.
          return self.default_pool.acquire_account(owner=owner)
docs: Acquires an account for the given host and returns it.
          The host is passed to each of the match functions that were
          passed in when adding the pool. The first pool for which the
          match function returns True is chosen to assign an account.
  
          :type  host: :class:`Host`
          :param host: The host for which an account is acquired.
          :type  owner: object
          :param owner: An optional descriptor for the owner.
          :rtype:  :class:`Account`
          :return: The account that was acquired.