python for循环在矩阵中分配值

Question

我正在创建一个程序，该程序将创建一个网格，该程序将 除了您在输入处分配的矩阵数组的位置。

代码：

def onbekende_naam(hoogtes):
    print(hoogtes)
    i = 0
    j = 0
    pos1 = set()

    for hoogtes_subs in hoogtes:
        j = 0
        for hoogtes in hoogtes:
            print("i = " + str(i))
            print("j = " + str(j))
            pos1.add((i, j))
            print pos1
            j += 1
        i += 1
        #pos1.add((i, j))

    return pos1

#verwerking
print (onbekende_naam(hoogtes)) 

输入：

4 4
1 2 3 4
5 6 7 8
9 1 2 3
4 5 6 7
12 1

输出：

[['1', '2', '3', '4'], ['5', '6', '7', '8'], ['9', '1', '2', '3'], ['4', '5', '6', '7']]
i = 0
j = 0
set([(0, 0)])
i = 0
j = 1
set([(0, 1), (0, 0)])
i = 0
j = 2
set([(0, 1), (0, 0), (0, 2)])
i = 0
j = 3
set([(0, 1), (0, 3), (0, 0), (0, 2)])
i = 1
j = 0
set([(0, 1), (0, 3), (0, 0), (0, 2), (1, 0)])
i = 1
j = 1
set([(0, 1), (0, 0), (0, 2), (1, 0), (0, 3), (1, 1)])
i = 1
j = 2
set([(0, 1), (1, 2), (0, 0), (0, 2), (1, 0), (0, 3), (1, 1)])
i = 1
j = 3
set([(0, 1), (1, 2), (0, 0), (0, 2), (1, 3), (1, 0), (0, 3), (1, 1)])
i = 2
j = 0
set([(0, 1), (1, 2), (0, 0), (0, 2), (2, 0), (1, 3), (1, 0), (0, 3), (1, 1)])
i = 3
j = 0
set([(0, 1), (1, 2), (0, 0), (3, 0), (0, 2), (2, 0), (1, 3), (1, 0), (0, 3), (1, 1)])
set([(0, 1), (1, 2), (0, 0), (3, 0), (0, 2), (2, 0), (1, 3), (1, 0), (0, 3), (1, 1)])

如您所见，当 i 值大于 2 时，它会停止递增 j

我在这方面还很陌生，所以感谢您的帮助

Answer 1

看起来您在第二个 for 循环中使用了相同的名称。如果改变这个可以尝试吗？

def onbekende_naam(hoogtes):
    print(hoogtes)
    i = 0
    j = 0
    pos1 = set()

    for hoogtes_subs in hoogtes:
        j = 0
        for another_name_hoogtes in hoogtes:
            print("i = " + str(i))
            print("j = " + str(j))
            pos1.add((i, j))
            print pos1
            j += 1
        i += 1
        #pos1.add((i, j))

    return pos1

#verwerking
print (onbekende_naam(hoogtes)) 

另外：当我运行您的原始代码时，我收到以下错误：

TypeError: 'int' 对象不可迭代

为什么你没有收到这个错误？