python - 为每个元组添加第一个值

Question

我有一个嵌套字典inputlist。每个列表有 2 个元组。我想计算 0 类和 1 类的每个元组第一个值的总和。

这是我的代码:

inputlist={1:{0: [(5.0, 3.6), (20.0, 0.0)],
              1: [(4.0, 0.0), (22.0, 0.0)]},
           2:{0: [(2.0, 0.5), (21.0, 0.5)],
              1: [(5.0, 0.0), (22.0, 0.0)]}
          }
      

sum_result={} 

for k1, v1 in inputlist.items():
   
    for (k2, v2) in v1.items():
        sum_result[k2]=1
        for i in range(len(v2)):
            (value1, value2) = v2[i]
            sum_result[k2] += value1
print(sum_result)

输出应如下所示:

{0: 48.0, 1: 53.0}

Answer 1

你可以尝试这个方法:

inputlist={1:{0: [(5.0, 3.6), (20.0, 0.0)],
              1: [(4.0, 0.0), (22.0, 0.0)]},
           2:{0: [(2.0, 0.5), (21.0, 0.5)],
              1: [(5.0, 0.0), (22.0, 0.0)]
              }
   }
sum_l={}
all_list=[]
for i in inputlist.values():
    for j in i.values():
        t_sum=0
        for k in j:
            t_sum+=k[0]
        all_list.append(t_sum)
j={0:sum(all_list[::2]),1:sum(all_list[1::2])}
print(j)

您也可以尝试这个:

sum_l={}
all_list=[]
sum_={}
for a, b in inputlist.items():
    for c, d in b.items():
        try:
            sum_[c] += sum(li[0] for li in d)
        except KeyError:
            sum_[c] = sum(li[0] for li in d)
print(sum_)