def prepare_system_testing_session(test_cases_ids, playback_speed):
    """Store relevant data beforing beginning testing session.

    Data will be included in the full report at the end of the
    testing session, after the last test finished.
    """

    _SESSION_DATA['requested_cases'] = test_cases_ids

    _SESSION_DATA['start_time'] = str(datetime.now())

    _SESSION_DATA['playback_speed'] = playback_speed

    _SESSION_DATA['test_cases_stats'] = _TEST_CASES_STATS
Store relevant data beforing beginning testing session.

    Data will be included in the full report at the end of the
    testing session, after the last test finished.
    
nodezator/systemtesting/playsupport.py