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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 associate_keys(user_dict, client):
 """ This whole function is black magic, had to however cause of the way we keep key-machine association """

    added_keys = user_dict['keypairs']

    print ">>>Updating Keys-Machines association"
    for key in added_keys:
        machines = added_keys[key]['machines']
        if machines:
            try:
                for machine in machines:
                    cloud_id = machine[0]
                    machine_id = machine[1]
                    ssh_user = machine[3]
                    ssh_port = machine[-1]
                    key = client.keys[key]
                    cloud = cloud_from_id(client, cloud_id)
                    cloud.update_machines()
                    mach = machine_from_id(cloud, machine_id)
                    public_ips = mach.info.get('public_ips', None)
                    if public_ips:
                        host = public_ips[0]
                    else:
                        host = ""
                    key.associate_to_machine(cloud_id=cloud_id, machine_id=machine_id, host=host, ssh_port=ssh_port,
                                             ssh_user=ssh_user)

                    print "associated machine %s" % machine_id
            except Exception as e:
                pass
    client.update_keys()
    print