def get_value_from_valuation_sheets(df, loc1, row_name, loc2, alt_row=None):
    """
    loc1  ------ loc2
     -
     -
     -
     -
    row_name(alt_row) --- value
    :param df: 设置好 column name 的 pandas dataframe
    :param loc1: 如图
    :param row_name: 如图
    :param loc2: 如图
    :param alt_row: 如图
    :return: 如图 value
    """
    value = df[df[loc1] == row_name][loc2].values
    if value.size == 0 and alt_row is not None:
        value = df[df[loc1] == alt_row][loc2].values
    if value.size == 0:
        return None
    else:
        if isinstance(value[0], str):
            ret = value[0].replace(',', '').replace('，', '')
        else:
            ret = value[0]
        return ret
