Python：如何對3d陣列中的值求和，其中最后一個陣列是使用函式映射和求和的字典

（這是代碼出現的第 4 天，我已經有了我的星星，但我想更有效地做到這一點）
我有一個像這樣的 3d 矩陣：

[
    [
        [{22: 0}, {13: 0}, {17: 1}, {11: 1}, {0 : 1}],
        [{8 : 0}, {2 : 1}, {23: 1}, {4 : 1}, {24: 1}],
        [{21: 1}, {9 : 1}, {14: 1}, {16: 0}, {7 : 1}],
        [{6 : 0}, {10: 0}, {3 : 0}, {18: 0}, {5 : 1}],
        [{1 : 0}, {12: 0}, {20: 0}, {15: 0}, {19: 0}]
    ],

    [
        [{3 : 0}, {15: 0}, {0 : 1}, {2 : 1}, {22: 0}],
        [{9 : 1}, {18: 0}, {13: 0}, {17: 1}, {5 : 1}],
        [{19: 0}, {8 : 0}, {7 : 1}, {25: 0}, {23: 1}],
        [{20: 0}, {11: 1}, {10: 0}, {24: 1}, {4 : 1}],
        [{14: 1}, {21: 1}, {16: 0}, {12: 0}, {6 : 0}]
    ], 
    
    [
        [{14: 1}, {21: 1}, {17: 1}, {24: 1}, {4 : 1}],
        [{10: 0}, {16: 0}, {15: 0}, {9 : 1}, {19: 0}],
        [{18: 0}, {8 : 0}, {23: 1}, {26: 0}, {20: 0}], 
        [{22: 0}, {11: 1}, {13: 0}, {6 : 0}, {5 : 1}], 
        [{2 : 1}, {0 : 1}, {12: 0}, {3 : 0}, {7 : 1}]
    ]
]

我想使用 map/sum 函式對這些矩陣之一的所有值求和。這就是我現在擁有的并且有效：

# z is one of those matrices, 0, 1 or 2
soma = 0
for line in matrices[z]:  # line is a list of dictionaries
    for dic in line:      # dic is a dictionary from the list
        valor = list(dic.values())[0]
        if valor == 0:
            soma  = list(dic.keys())[0]

我試圖做的事情：

print("soma = ", sum(map(sum, ( (value.values())[0] for value in matrizes[z]))))

這不起作用，我收到此錯誤：Traceback（最近一次通話）：

檔案“day4.py”，第 75 行，在 <module> 中
print("part 1 = ", sum(map(sum, ((value.values())[0] for value in matrizes[z]))))
檔案“day4.py”，第 75 行，在 <genexpr> 中
print("part 1 = ", sum(map(sum, ((value.values())[0] for value in matrizes[z]))))
AttributeError: 'list' 物件沒有屬性 'values'

我找到了一篇關于 2d 陣列的帖子，但無法理解如何為 3d 陣列制作它。
我還找到了使用“numpy”的帖子，但我想使用 map 和 sum 函式。

uj5u.com熱心網友回復：

你可以做：

z = 0
soma = sum(map(lambda line: sum(k for d in line for k, v in d.items() if v == 0), matrices[z]))
print(soma) # 163

uj5u.com熱心網友回復：

你可以這樣寫一行：

m = [
    [
        [{22: 0}, {13: 0}, {17: 1}, {11: 1}, {0 : 1}],
        [{8 : 0}, {2 : 1}, {23: 1}, {4 : 1}, {24: 1}],
        [{21: 1}, {9 : 1}, {14: 1}, {16: 0}, {7 : 1}],
        [{6 : 0}, {10: 0}, {3 : 0}, {18: 0}, {5 : 1}],
        [{1 : 0}, {12: 0}, {20: 0}, {15: 0}, {19: 0}]
    ],

    [
        [{3 : 0}, {15: 0}, {0 : 1}, {2 : 1}, {22: 0}],
        [{9 : 1}, {18: 0}, {13: 0}, {17: 1}, {5 : 1}],
        [{19: 0}, {8 : 0}, {7 : 1}, {25: 0}, {23: 1}],
        [{20: 0}, {11: 1}, {10: 0}, {24: 1}, {4 : 1}],
        [{14: 1}, {21: 1}, {16: 0}, {12: 0}, {6 : 0}]
    ], 
    
    [
        [{14: 1}, {21: 1}, {17: 1}, {24: 1}, {4 : 1}],
        [{10: 0}, {16: 0}, {15: 0}, {9 : 1}, {19: 0}],
        [{18: 0}, {8 : 0}, {23: 1}, {26: 0}, {20: 0}], 
        [{22: 0}, {11: 1}, {13: 0}, {6 : 0}, {5 : 1}], 
        [{2 : 1}, {0 : 1}, {12: 0}, {3 : 0}, {7 : 1}]
    ]
]

s = sum([k for y in m for x in y for z in x for k,v in z.items() if v == 0])
print(s)

標籤：Python 数组 字典 矩阵 和

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