def __init__(self): host_list = open('InstancesConfigurations/public_ips', 'r').read().splitlines() self.connections = [] self.pool = Serial() party_id = 0 for host in host_list: c = Connection(host, user='******', connect_kwargs={ 'key_filename': ['%s/Keys/matrix.pem' % Path.home()] }) c.party_id = party_id party_id += 1 self.connections.append(c) self.pool.append(c)