我有一些示例代碼如下：import numpy as npimport pandas as pdx = range(1, 12)arr1 = np.random.randint(x)arr2 = np.array(x)arr3 = np.random.randint(x)arr4 = np.random.randint(x)arr5 = np.random.randint(0, 2, 11)dict_df = {    'arr1' : arr1,    'arr2' : arr2,    'arr3' : arr3,    'arr4' : arr4,    'arr5' : arr5}d = pd.DataFrame(dict_df)num_count = 0list_of_num = []for i in d.index:    number = d['arr1'][i]    for num in d['arr5']:        if num == 1:            num_count = 1            number = number            list_of_num.append(number)        elif num == 0:            num_count = 0print(list_of_num)我正在嘗試構(gòu)建列表，如果列中的所有列前面arr5都有 -1，則它們都會(huì)附加到列表中。我從中收到的輸出是：[0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2, 0, 0, 0, 0, 0, 0, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 8, 8, 8, 8, 8, 8]代碼的問(wèn)題是我誤用了for循環(huán)，這就是為什么列表重復(fù)了這么多次的原因。我怎樣才能更改代碼以使代碼不會(huì)重復(fù)？