如何用对应的字典替换列表中的数字？

Question

我想知道有关如何用其字典对应物替换列表中的数字的正确方法。

目前，我的代码是：

#the object list and max weight are supposed to be user input but i have hard coded it in for now to try and get other parts working first.

object_list = [(2, 70), (3, 85), (5, 120)] # the first number in the tuple is my weight and the second is my cost

max_weight = 17 #this is the number each list in the list of lists add to 

#seperatng weights and costs into a string then making a dictionary out of it.
weight_values = [int(i[0]) for i in object_list] 
cost_values = [int(i[1]) for i in object_list]
dictionary = dict(zip(weight_values, cost_values))

可以说我有列表（添加到最大重量的所有可能组合）：

[[3, 2, 2, 2, 2, 2, 2, 2], [3, 3, 3, 2, 2, 2, 2], [3, 3, 3, 3, 3, 2], [5, 2, 2, 2, 2, 2, 2], [5, 3, 3, 2, 2, 2], [5, 3, 3, 3, 3], [5, 5, 3, 2, 2], [5, 5, 5, 2]]

我生成的字典是：

dictionary = {2: 70, 3: 85, 5: 120}

我想尝试做的是将所有2替换为70，将所有3替换为85，将所有5替换为120（在这种情况下）。 生成的字典基于用户输入，因此在另一种情况下，所有2可能都需要用35代替70代替。我需要一种替换数字的方式，而无需特别说明是否有2替换为70.使用此答案生成列表列表（ 递归树过早终止函数 ）

Answer 1

要替换列表中的值：

l = [[3, 2, 2, 2, 2, 2, 2, 2], [3, 3, 3, 2, 2, 2, 2], [3, 3, 3, 3, 3, 2], [5, 2, 2, 2, 2, 2, 2], [5, 3, 3, 2, 2, 2], [5, 3, 3, 3, 3], [5, 5, 3, 2, 2], [5, 5, 5, 2]]
dictionary = {2: 70, 3: 85, 5: 120}
new_l = [[dictionary[b] for b in i] for i in l]

输出：

[[85, 70, 70, 70, 70, 70, 70, 70], [85, 85, 85, 70, 70, 70, 70], [85, 85, 85, 85, 85, 70], [120, 70, 70, 70, 70, 70, 70], [120, 85, 85, 70, 70, 70], [120, 85, 85, 85, 85], [120, 120, 85, 70, 70], [120, 120, 120, 70]]

Answer 2

替换值：

old_list = [[3, 2, 2, 2, 2, 2, 2, 2], [3, 3, 3, 2, 2, 2, 2], [3, 3, 3, 3, 3, 2], [5, 2, 2, 2, 2, 2, 2], [5, 3, 3, 2, 2, 2], [5, 3, 3, 3, 3], [5, 5, 3, 2, 2], [5, 5, 5, 2]]
dictionary = {2: 70, 3: 85, 5: 120}
new_list = []
temp = []
for i in old_list:
    temp = []
    for b in i:
        temp.append(dictionary[b])
    new_list.append(temp)

输出：

[[85, 70, 70, 70, 70, 70, 70, 70], [85, 85, 85, 70, 70, 70, 70], [85, 85, 85, 85, 85, 70], [120, 70, 70, 70, 70, 70, 70], [120, 85, 85, 70, 70, 70], [120, 85, 85, 85, 85], [120, 120, 85, 70, 70], [120, 120, 120, 70]]