在字典列表中查找重复项[重复]

如果你不需要提高效率:

from functools import partial
import json

list(map(json.loads, set(map(partial(json.dumps, sort_keys=True), l))))

如果你必须提高效率:

serialized = map(tuple, map(sorted, map(dict.items, l)))
unique = set(serialized)
result = list(map(dict, unique))

应该工作:

l2 = []

for d in l:
    if d not in l2:
        l2.append(d)

r = [x for i,x in enumerate(l) if x not in l[:i]]

集合项必须是可哈希的,而dict则不是。你可以使用 pickle 要序列化所有听写,请使用 set 要获取唯一项,并最终将其反序列化回dicts:

import pickle
print(list(map(pickle.loads, set(map(pickle.dumps, l)))))

此输出:

[{'id': 'cloth'}, {'id': 'scissor'}]

我最简单的方法是:

l = [{'id': 'scissor'}, {'id': 'cloth'}, {'id': 'scissor'}]

r= []
for i in l:
    if i not in r:
        r.append(i)

print(r)   # [{'id': 'scissor'}, {'id': 'cloth'}]