def d_timeToString(dateString):
    """
    input: string
    output: string
    description: format dateString to yyyymmddHHMM
    example: 2018-08-26 14:18:40 ->> 201808261418
    """
    return dateString.replace("-", "").replace(" ", "").replace(":",
                                                                "").replace(
        "/", "").replace("T", "")[:12]