我有一本字典:
d = {'Trump': ['MAGA', 'FollowTheMoney'],
'Clinton': ['dems', 'Clinton'],
'Stein': ['FollowTheMoney', 'Atlanta']}
我想删除字符串列表中的重复字符串,该字符串是键的值。
对于这个例子,期望的结果是
update_d = {'Trump': ['MAGA'],
'Clinton': ['dems', 'Clinton'],
'Stein': ['Atlanta']}
有人问过类似的问题here https://stackoverflow.com/questions/8749158/removing-duplicates-from-dictionary,但我无法根据我的目的修改它。
我的尝试:
new_d = {}
for key in d:
for key2 in d:
lst = d[key]
lst2 = d[key2]
for string in lst:
for string2 in lst2:
if string not in new_d:
我的问题是我想比较所有键的值并删除重复项。但是,我不知道如何实现这一点
不如使用那么优雅Counter
,但确实在不使用模块的情况下删除重复项:
d = {'Trump': ['MAGA', 'FollowTheMoney'],
'Clinton': ['dems', 'Clinton'],
'Stein': ['FollowTheMoney', 'Atlanta']}
dupvals = [item for sublist in d.values() for item in sublist] # get all values from all keys into a list
dups = [] # list to hold duplicates
for i in dupvals:
if dupvals.count(i) > 1:
dups.append(i)
dupvals = set(dups) # keep only one item for each duplicated item
new_d = {}
for key,values in d.items():
for value in values:
if not value in dupvals:
new_d.setdefault(key, []).append(value)
print new_d # {'Clinton': ['dems', 'Clinton'], 'Trump': ['MAGA'], 'Stein': ['Atlanta']}
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