将._replace的命名元组字段名称作为函数的参数传递

所以我有一个命名元组，说：

from collections import namedtuple

Symbol = namedtuple('Symbol', 'name code industry date_au open high low close volume weekday_au date_utc_unixtimestamp prev_volume', defaults = ('DEFAULT', 'DEF', 'DEFAULT', '01/01/1970', 0.0, 0.0, 0.0, 0.0, 0, 'Mon', 0, 0))

我做一些测试数据：

ont_data = [
Symbol(name = '1300 SMILES LIMITED', code ='ONT', industry = 'Tech', date_au = '03/05/2020', open = 10.0, high = 12.0, low = 9.5, close = 11.0, volume = 1000, weekday_au = 'Sun', date_utc_unixtimestamp = 123),
Symbol(name = '1300 SMILES LIMITED', code ='ONT', industry = 'Tech', date_au = '15/05/2020', open = 12.0, high = 12.0, low = 5.5, close = 9.0, volume = 999, weekday_au = 'Fri', date_utc_unixtimestamp = 125),
Symbol(name = '1300 SMILES LIMITED', code ='ONT', industry = 'Tech', date_au = '17/01/2020', open = 4.0, high = 90.0, low = 54.5, close = 74.0, volume = 27, weekday_au = 'Wed', date_utc_unixtimestamp = 5)
]

现在，我想创建此命名元组的副本，并对特定属性动态进行一些替换：

def set_prev_val(symbol, prev_values, field_to_update):
    """
    Iterate over a copy of Symbol named tuple and replace some attribute values.

    Return a copy of Symbol named tuple with replaced previous values of some field_to_update

    args:
      @symbol - A descending sorted named tuple representing stock symbol data
      @prev_values - A list of previous values (from a descending sorted Symbol)
      @field_to_update - A field in a Symbol named tuple to update
   """
    symbol_copy = symbol

    for row in range(0, len(symbol_copy)):
        symbol_copy[row] = symbol[row]._replace(field_to_update = prev_values[row])
    return symbol_copy

当我用prev_values_data = [1,2,3]测试时，我得到：

ValueError: Got unexpected field names: ['field_to_update']

我想要的是prev_volume字段，要使用prev_values_data的值进行更新

我认为不是传递field_to_update的字符串值，而是将命名元组中属性的实际名称作为参数名称！

有没有一种方法可以将某些“名称”属性作为参数从函数传递给命名元组中的..replace调用？（假设在命名的元组属性名称中存在“名称”）

Python 3.7

问题来源：stackoverflow