在字典中追加值列表

Question

我有字典，里面有不同的列表。

我希望将不同字典中的数据合并，并在其中附加类似键的值。

{'mental_issue': ['stress', 'live in fear', 'stomach curl', 'wracked by stress', 'chest tighten']}
{'sexual_abuse': ['stalking'], 'mental_issue': ['abuse', 'pica']}
{}
{'verbal_abuse': ['in the face'], 'mental_issue': ['abuse']}
{}
{'mental_issue': ['abuse']}
{'mental_issue': ['abuse']}
{'mental_abuse': ['name call'], 'mental_issue': ['abuse']}
{}
{'mental_issue': ['broken jaw', 'abuse', 'heart broken']}
{'mental_issue': ['live in fear']}
{'mental_issue': ['abuse', 'trauma']}
{'mental_issue': ['nightmares', 'abuse', 'panic attack']}
{'mental_issue': ['stress']}
{'mental_issue': ['severe']}
{'mental_issue': ['nightmares', 'bad emotional state']}
{'sexual_abuse': ['rape'], 'mental_issue': ['stress', 'paranoia']}
{'mental_issue': ['fracturing both my', 'both my knees']}
{'mental_issue': ['abuse']}
{'sexual_abuse': ['rape'], 'verbal_abuse': ['kicking'], 'mental_issue': ['nightmares']}

我想把所有问题的价值观结合起来，比如mental_abuse，应该从所有的字典中排除所有的心理障碍。

我写了这个逻辑-

sexual_abuse_list = []
d = {'sexual_abuse': ['rape'], 'verbal_abuse': ['kicking'], 'mental_issue': ['nightmares']}
if 'sexual_abuse' in d:
    for item in d['sexual_abuse']:
            sexual_abuse_list.append(item)

这逻辑正确吗？或者有什么更好的逻辑可以写？

Answer 1

使用collections.defaultdict

Ex:

from collections import defaultdict


lst = [{'mental_issue': ['stress', 'live in fear', 'stomach curl', 'wracked by stress', 'chest tighten']},
{'sexual_abuse': ['stalking'], 'mental_issue': ['abuse', 'pica']},
{},
{'verbal_abuse': ['in the face'], 'mental_issue': ['abuse']},
{},
{'mental_issue': ['abuse']},
{'mental_issue': ['abuse']},
{'mental_abuse': ['name call'], 'mental_issue': ['abuse']},
{},
{'mental_issue': ['broken jaw', 'abuse', 'heart broken']},
{'mental_issue': ['live in fear']},
{'mental_issue': ['abuse', 'trauma']},
{'mental_issue': ['nightmares', 'abuse', 'panic attack']},
{'mental_issue': ['stress']},
{'mental_issue': ['severe']},
{'mental_issue': ['nightmares', 'bad emotional state']},
{'sexual_abuse': ['rape'], 'mental_issue': ['stress', 'paranoia']},
{'mental_issue': ['fracturing both my', 'both my knees']},
{'mental_issue': ['abuse']},
{'sexual_abuse': ['rape'], 'verbal_abuse': ['kicking'], 'mental_issue': ['nightmares']}]

d = defaultdict(list)

for i in lst:
    for k, v in i.items():
        d[k].extend(v)
print(d)

输出：

defaultdict(<type 'list'>, {'sexual_abuse': ['stalking', 'rape', 'rape'], 'verbal_abuse': ['in the face', 'kicking'], 'mental_abuse': ['name call'], 'mental_issue': ['stress', 'live in fear', 'stomach curl', 'wracked by stress', 'chest tighten', 'abuse', 'pica', 'abuse', 'abuse', 'abuse', 'abuse', 'broken jaw', 'abuse', 'heart broken', 'live in fear', 'abuse', 'trauma', 'nightmares', 'abuse', 'panic attack', 'stress', 'severe', 'nightmares', 'bad emotional state', 'stress', 'paranoia', 'fracturing both my', 'both my knees', 'abuse', 'nightmares']})