Python 在嵌套列表的目录中插入一个值

这里我想在嵌套列表的字典中插入一个值。 这就是我所尝试的

company_ids = [1,2,3]   
seller_ids = [[0, False, { u'company_id': 4}]]
result = []
for company in company_ids:
    for i in xrange(0, len(seller_ids)):
        seller_ids[i][2]['company_id'] = company
        result.append(seller_ids[i])
print result

我明白了

但我期待着这个

---

请帮我解决这个问题。提前感谢…

发生这种情况是因为您每次更改并将相同的列表

[0，False，{u'company\u id'：4}]

附加到

结果中，所以最后它将包含对同一列表的三个引用，并进行最新修改。
您需要在卖家id中创建一个您想要更改的条目副本。正如niemmi所说，否则每次都要处理相同的条目

from copy import deepcopy

company_ids = [1,2,3]   
seller_ids = [[0, False, { u'company_id': 4}]]
result = []
for company in company_ids:
    for i in xrange(0, len(seller_ids)):
        mycopy = deepcopy(seller_ids[i])
        mycopy[2]['company_id'] = company
        result.append(mycopy)

print result

[[0, False, {u'company_id': 1}],
 [0, False, {u'company_id': 2}],
 [0, False, {u'company_id': 3}]]

from copy import deepcopy

company_ids = [1,2,3]   
seller_ids = [[0, False, { u'company_id': 4}]]
result = []
for company in company_ids:
    for i in xrange(0, len(seller_ids)):
        mycopy = deepcopy(seller_ids[i])
        mycopy[2]['company_id'] = company
        result.append(mycopy)

print result