Обновление списка в python

Question

Я более свеж в python. У меня есть некоторые проблемы со списком. После создания списка я обновляю его. это правильно, когда я печатаю каждый элемент списка в l oop неправильно, но неправильно, когда я возвращаю список: все элементы списка одинаковы

def shift(array,n):
    for i in range(n):
        array.append(array[0])
        array.pop(0)
    return array

def shiftKey(array):
    array_shift = []
    for i in range(16):
        array_shift.append([])

    array_shift[0] = [shift(array[0],1),shift(array[1],1)]
    print (array_shift[0])
    for j in range(1,16):
        if j == 1 or j == 8 or j == 15:
            a1 = shift(array_shift[j-1][0],1)
            a2 = shift(array_shift[j-1][1],1)
            array_shift[j] = [a1,a2]
            print (array_shift[j])
        else:
            a1 = shift(array_shift[j-1][0],2)
            a2 = shift(array_shift[j-1][1],2)
            array_shift[j] = [a1,a2]
            print (array_shift[j])
    return array_shift
shiftKey([[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16],[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]])

, и это ожидаемый результат

[[[2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1], [2, 3, 4, 5, 6, 7 , 8, 9, 10, 11, 12, 13, 14, 15, 16, 1]] [[3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2], [3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2]] [[5, 6, 7, 8 , 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4], [5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16 , 1, 2, 3, 4]] [[7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6], [7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6]] [[9, 10, 11, 12, 13, 14, 15, 16, 1, 2 , 3, 4, 5, 6, 7, 8], [9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8]] [[ 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10], [11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10]] [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]] [ [15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14], [15, 16, 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10, 11, 12, 13, 14]] [[16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15], [16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15]] [[2, 3, 4, 5, 6, 7 , 8, 9, 10, 11, 12, 13, 14, 15, 16, 1], [2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 , 16, 1]] [[4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3], [4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3]] [[6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1 , 2, 3, 4, 5], [6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5]] [[8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7], [8, 9, 10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7]] [[10, 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9], [10 , 11, 12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9]] [[12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11], [12, 13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11] ] [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]]]

, но печатается, как показано ниже, когда я печатаю список

[ [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
[13 , 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4 , 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 ]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2 , 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9 , 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15 , 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 1 4, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12] ], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12],
[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14 , 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6 , 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3 , 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]], [[13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12], [13, 14, 15, 16, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12]]]

Answer 1

Вам необходимо использовать функциональность deepcopy, чтобы передавать копию списка вместо ссылки на список.

Также вы можете использовать следующую простую функцию для поворота:

def shift(input_list, rotate):
    return input_list[rotate:] + input_list[:rotate]

Я предлагаю вам прочитать о defaultlist .

Я исправил свой код и дал альтернативное решение, попробуйте это.

import copy

def shift(array,n):
    for i in range(n):
        array.append(array[0])
        array.pop(0)
    return array

def shiftKey(array):
    array_shift = []
    array_shift.append([shift(array[0],1),shift(array[1],1)])
    print (array_shift[0])
    for j in range(1,16):
        if j == 1 or j == 8 or j == 15:
            a1 = shift(copy.deepcopy(array_shift[j-1][0]),1)
            a2 = shift(copy.deepcopy(array_shift[j-1][1]),1)
            array_shift.append([a1,a2])
            print (array_shift[j])
        else:
            a1 = shift(copy.deepcopy(array_shift[j-1][0]),2)
            a2 = shift(copy.deepcopy(array_shift[j-1][1]),2)
            array_shift.append([a1,a2])
            print (array_shift[j])
    return array_shift

shiftKey([[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16],[1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]])