I keep getting errors around this section, I can't move the block, can someone help me fix it? [closed]

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code error KeyError: 2

num is 2. the dict numberPosReverse doesn't have a key of '2' But I don't know how to fix it. I'm not sure if the question should appear on numberPosReverse[num] or where.

def number_move(number_pos, move_input, score_list):
    values = list(number_pos.values())
    keys = list(number_pos.keys())
    numberPosReverse = dict(zip(values, keys))
    newScorelist = score_list.copy()
    oldScorelist = {}
    while newScorelist != oldScorelist:
        oldScorelist = newScorelist.copy()
        for num in range(1, 17):
            pos = eval(numberPosReverse[num])
            x, y = pos[0] + move_input[0], pos[1] + move_input[1]
            pos[0] = [x if 1 <= x <= 4 else pos[0]][0]
            pos[1] = [y if 1 <= y开发者_Go百科 <= 4 else pos[1]][0]
            number = number_pos['{}'.format(pos)]
            oldNumberscore = newScorelist[num]
            nextNumberscore = newScorelist[number]
            syn = list(map(lambda x, y: abs(x) * abs(y), move_input, pos))
            # zero value movement
            if nextNumberscore == 0:
                newScorelist[number] = oldNumberscore
                newScorelist[num] = 0
            # no movement
            elif num == number:
                pass
            # merge movement
            elif oldNumberscore == nextNumberscore and num != number:
                newScorelist[number] = 2 * oldNumberscore
                newScorelist[num] = 0
            # boundary movement
            elif oldNumberscore != nextNumberscore and 1 in syn or 4 not in syn:
                pass
            # non-boundary movement
            elif oldNumberscore != nextNumberscore and 1 not in syn and 4 not in syn:
                x, y = pos[0] + move_input[0], pos[1] + move_input[1]
                next2Numberscore = newScorelist[number_pos['{}'.format([x, y])]]
                if next2Numberscore != nextNumberscore:
                    pass
                elif next2Numberscore == nextNumberscore:
                    newScorelist[number_pos['{}'.format([x, y])]] = 2 * next2Numberscore
                    newScorelist[number] = oldNumberscore
                    newScorelist[num] = 0
    return newScorelist