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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def find_clients(self, hosts):
 """Finds GRR clients given a list of hosts. Args: hosts: List of hostname FQDNs Returns: List of GRR client objects. """

    # TODO(tomchop): Thread this
    clients = []
    for host in hosts:
      clients.append(self._get_client_by_hostname(host))
    return [client for client in clients if client is not None]