Questão. Suponha que o Python tenha lido todas as funções a seguir (teclamos F5 no spyder).
def f(x, y): def g(x, y): def h(x, y, z): for i in range(2): x = [[0, 0, 0], [0, 0, 0]] z[0][0] = x[0][0]*y[0][0] + x[0][1]*y[1][0] for j in range(3): for i in range(2): z[0][1] = x[0][0]*y[0][1] + x[0][1]*y[1][1] x[i][j] = y[i][j]+1 for j in range(3): z[1][0] = x[1][0]*y[0][0] + x[1][1]*y[1][0] y[i][j] = 4 x[i][j] = y[i][j]+1 z[1][1] = x[1][0]*y[0][1] + x[1][1]*y[1][1] return x
A seguir está uma transcrição de uma seção do Python Shell. Complete as lacunas com o valor do resultado da expressão correspondente. Se ocorrer um erro, escreva apenas ERRO.
In [1]: x = [[1, 1, 1], [1, 1, 1]]
In [2]: f(x, x)
In [3]: x
Out[3]: [[4, 4, 4], [4, 4, 4]]
In [4]: x = [[1, 1, 1], [1, 1, 1]]
In [5]: y = x
In [6]: f(x, y)
In [7]: x
Out[7]: [[4, 4, 4], [4, 4, 4]]
In [8]: y
Out[8]: [[4, 4, 4], [4, 4, 4]]
In [9]: x = [[1, 1, 1], [1, 1, 1]]
In [10]: y = [[2, 2, 2], [2, 2, 2]]
In [11]: f(x, y)
In [12]: x
Out[12]: [[3, 3, 3], [3, 3, 3]]
In [13]: y
Out[13]: [[4, 4, 4], [4, 4, 4]]
In [14]: x = [[1, 1, 1], [1, 1, 1]]
In [15]: y = [[2, 2, 2], [2, 2, 2]]
In [16]: z = g(x,y)
In [17]: z[0][0] = 5
In [18]: x
Out[18]: [[1, 1, 1], [1, 1, 1]]
In [19]: y
Out[19]: [[2, 2, 2], [2, 2, 2]]
In [20]: z
Out[20]: [[5, 3, 3], [3, 3, 3]]
In [21]: x = [[1 , 0], [-1, 2]]
In [22]: y = [[2, 1], [ 1, 1]]
In [23]: z = [[0, 0], [ 0, 0]]
In [24]: h(x, y, z)
In [25]: z
Out[25]: [[2, 1], [0, 1]]
In [26]: x = [[1 , 0], [-1, 2]]
In [27]: y = [[2, 1], [ 1, 1]]
In [28]: h(x, y, x)
In [29]: x
Out[29]: [[2, 2], [0, 2]]
Comentários?