如何在列表中快速找到重复的词典？

Question

我有一个字典列表，例如：

list_of_clients = [
    {"Name": "Alex", "Surname": "Dorfman", ...},
    {"Name": "Serge", "Surname": "Ioffe"}, ...
]

我知道同一个客户端的列表中有重复的字典。你知道吗

有没有办法快速打印出来？你知道吗

谢谢！你知道吗

Answer 1

你可以保留一个set已经看到的名字。您必须定义应该考虑哪些键。在这种情况下：["Name", "Surname"]。如果需要，只需添加更多：

list_of_clients = [{"Name": "Alex", "Surname": "Dorfman"}, {"Name": "Serge", "Surname": "Ioffe"}, {"Name": "Alex", "Surname": "Dorfman"}, {"Name": "Serge", "Surname": "Ioffe"}]

already_seen = set()

for client in list_of_clients:
    complete_name = tuple(client.get(k) for k in ["Name", "Surname"])
    if complete_name in already_seen:
        print("Duplicate : %s" % (complete_name,))
    already_seen.add(complete_name)

它输出：

Duplicate : ('Alex', 'Dorfman')
Duplicate : ('Serge', 'Ioffe')