method returns tag that all messages will be preceded with

def get_log_tag(process_name):
    """method returns tag that all messages will be preceded with"""
    process_obj = context.process_context[process_name]
    if isinstance(process_obj, FreerunProcessEntry):
        return str(process_obj.token)
    elif isinstance(process_obj, ManagedProcessEntry):
        return str(process_obj.token) + str(process_obj.time_qualifier)
    elif isinstance(process_obj, DaemonProcessEntry):
        return str(process_obj.token)
    else:
        raise ValueError('Unknown process type: {0}'.format(process_obj.__class__.__name__))