data_loading.py 文件源码

def read_co_price():
    """
    ???????????
    """
    print("start loading data...")
    sql = const.CO_PRICE_SQL
    df = read_data_from_mysql(sql)
    df.index = pd.DatetimeIndex(df.price_date)
    print("loading data finished.")
    return df.drop(['price_date'], axis=1)