使用来自其他 2 个嵌套列表的项目填充嵌套列表

【问题标题】：populating a nested list with items from 2 other nested lists | python使用来自其他 2 个嵌套列表的项目填充嵌套列表 | Python
【发布时间】：2019-03-10 19:14:07
【问题描述】：

已编辑

我有 2 个嵌套列表，例如：

cluster_list_all_thermostat_starts = [[0, 1000, 1200, 1500, 7000], [2,300,400],[4,500,765,100,2500,3000]]

list_all_thermostat_set_points = [[20, 20, 20.5, 19.5, 19], [20,23.5,19.5],[20,20,19.5,20,25,21.5]]

它们具有精确的形状，这意味着：两个主列表中给定索引中的列表具有相同数量的元素。

我想创建一个嵌套的“主列表”，其中所有列表将具有相同数量的元素，并且元素将从 list_of_start_times 和 list_of_temperatures 填充：

master_list =[[temperature,temperature,temperature,...,temperature], [temperature,temperature,temperature,...,temperature], [temperature,temperature,temperature,...,temperature]]

master_list 应该有 3 个列表，每个列表具有相同数量的元素。

我现在就是这样做的：

master_list_of_quartiles = []
for domek in range(len(list_of_start_times)):

master_list = [0]*24*365*4
temperatures = list_all_thermostat_set_points[domek]

house_list_start_charge = cluster_list_all_thermostat_starts[domek]
house_list_end_charge = cluster_list_all_thermostat_starts[domek] #the same list is used because the thermostat only has start times
#print(house_list_start_charge)


for kwadrans in range(len(house_list_start_charge)):
    print(kwadrans)
    start_charge = int(house_list_start_charge[kwadrans])
    print(start_charge)
    try:
        end_charge = int(house_list_end_charge[kwadrans+1]) - 1
    except IndexError:
        end_charge = 4*24*365   
    print(end_charge)
    this_temp = temperatures[kwadrans]
    print(this_temp)

    for j in range(start_charge , end_charge):
        master_list[j]=this_temp
    master_list_of_quartiles.append(master_list)

全部：print(start_charge), print(this_temp), print(end_charge) 显示良好的值，但填写 master_list 不起作用，因为它会用最后一个迭代项填充它。

目标是稍后将master_list_of_quartiles 转换为 3 列和 24*365*4 索引的数据框。

如何在保持正确索引的同时修复它？

【问题讨论】：

不确定 80 来自您的示例输入。

标签： python list indexing iterator iteration

【解决方案1】：

我设法解决了这个问题！

for domek in range(len(house_has_thermostat)):

master_list = []
temperatures = list_all_thermostat_set_points[domek]

house_list_start_charge = cluster_list_all_thermostat_starts[domek]
house_list_end_charge = cluster_list_all_thermostat_starts[domek] #the same list is used because the thermostat only has start times


for kwadrans in range(len(house_list_start_charge)):
    print(kwadrans)
    start_charge = int(house_list_start_charge[kwadrans])
    print(start_charge)
    try:
        end_charge = int(house_list_end_charge[kwadrans+1]) - 1
    except IndexError:
        end_charge = 4*24*365   
    print(end_charge)
    this_temp = temperatures[kwadrans]
    print(this_temp)


    for j in range(start_charge , end_charge):
        master_list.extend([this_temp])
while len(master_list)<4*24*365:
    master_list.extend([this_temp])
master_list_of_quartiles.append(master_list)

【讨论】：