def DateDelta(p_date,p_days,p_months,p_years):
    from datetime import datetime
    from dateutil import relativedelta
    xtemp='19000101'
    if p_date>xtemp:
        xtemp=p_date
    xdate=datetime.strptime(xtemp,'%Y%m%d')
    xdate=xdate+relativedelta.relativedelta(days=int(p_days),months=int(p_months),years=int(p_years))
    retval=xdate.strftime('%Y%m%d')
    return retval