我正在尝试从下面的小列表中排除不包含特定POS标记的列表,但不能这样做。
a = ['VBG', 'RB', 'NNP']
我只想要输出中下面的元组列表列表中包含上述标签的列表: (以下标签可能不正确,但出于表示目的)
data = [[('User', 'NNP'),
('is', 'VBG'),
('not', 'RB'),
('able', 'JJ'),
('to', 'TO'),
('order', 'NN'),
('products', 'NNS'),
('from', 'IN'),
('iShopCatalog', 'NN'),
('Coala', 'NNP'),
('excluding', 'VBG'),
('articles', 'NNS'),
('from', 'IN'),
('VWR', 'NNP')],
[('Arfter', 'NNP'),
('transferring', 'VBG'),
('the', 'DT'),
('articles', 'NNS'),
('from', 'IN'),
('COALA', 'NNP'),
('to', 'TO'),
('SRM', 'VB'),
('the', 'DT'),
('Category', 'NNP'),
('S9901', 'NNP'),
('Dummy', 'NNP'),
('is', 'VBZ'),
('maintained', 'VBN')],
[('Due', 'JJ'),
('to', 'TO'),
('this', 'DT'),
('the', 'DT'),
('user', 'NN'),
('is', 'VBZ'),
('not', 'RB'),
('able', 'JJ'),
('to', 'TO'),
('order', 'NN'),
('the', 'DT'),
('product', 'NN')],
[('All', 'DT'),
('other', 'JJ'),
('users', 'NNS'),
('can', 'MD'),
('order', 'NN'),
('these', 'DT'),
('articles', 'NNS')],
[('She', 'PRP'),
('can', 'MD'),
('order', 'NN'),
('other', 'JJ'),
('products', 'NNS'),
('from', 'IN'),
('a', 'DT'),
('POETcatalog', 'NNP'),
('without', 'IN'),
('any', 'DT'),
('problems', 'NNS')],
[('Furtheremore', 'IN'),
('she', 'PRP'),
('is', 'VBZ'),
('able', 'JJ'),
('to', 'TO'),
('order', 'NN'),
('products', 'NNS'),
('from', 'IN'),
('the', 'DT'),
('Vendor', 'NNP'),
('VWR', 'NNP'),
('through', 'IN'),
('COALA', 'NNP')],
[('But', 'CC'),
('articles', 'NNP'),
('from', 'VBG'),
('all', 'RB'),
('other', 'JJ'),
('suppliers', 'NNS'),
('are', 'NNP'),
('not', 'VBG'),
('orderable', 'RB')],
[('I', 'PRP'),
('already', 'RB'),
('spoke', 'VBD'),
('to', 'TO'),
('anic', 'VB'),
('who', 'WP'),
('maintain', 'VBP'),
('the', 'DT'),
('catalog', 'NN'),
('COALA', 'NNP'),
('and', 'CC'),
('they', 'PRP'),
('said', 'VBD'),
('that', 'IN'),
('the', 'DT'),
('reason', 'NN'),
('should', 'MD'),
('be', 'VB'),
('the', 'DT'),
('assignment', 'NN'),
('of', 'IN'),
('the', 'DT'),
('plant', 'NN')],
[('User', 'NNP'),
('is', 'VBZ'),
('a', 'DT'),
('assinged', 'JJ'),
('to', 'TO'),
('Universitaet', 'NNP'),
('Regensburg', 'NNP'),
('in', 'IN'),
('Scout', 'NNP'),
('but', 'CC'),
('in', 'IN'),
('P17', 'NNP'),
('table', 'NN'),
('YESRMCDMUSER01', 'NNP'),
('she', 'PRP'),
('is', 'VBZ'),
('assigned', 'VBN'),
('to', 'TO'),
('company', 'NN'),
('001500', 'CD'),
('Merck', 'NNP'),
('KGaA', 'NNP')],
[('Please', 'NNP'),
('find', 'VB'),
('attached', 'JJ'),
('some', 'DT'),
('screenshots', 'NNS')]]
我的预期输出是:
data = [[('User', 'NNP'),
('is', 'VBG'),
('not', 'RB'),
('able', 'JJ'),
('to', 'TO'),
('order', 'NN'),
('products', 'NNS'),
('from', 'IN'),
('iShopCatalog', 'NN'),
('Coala', 'NNP'),
('excluding', 'VBG'),
('articles', 'NNS'),
('from', 'IN'),
('VWR', 'NNP')],
[('But', 'CC'),
('articles', 'NNP'),
('from', 'VBG'),
('all', 'RB'),
('other', 'JJ'),
('suppliers', 'NNS'),
('are', 'NNP'),
('not', 'VBG'),
('orderable', 'RB')]
我尝试通过编写以下代码来完成此操作,但无法执行此操作:
list1=[]
for i in data:
list2 = []
a = ['VBG', 'RB', 'NNP']
for j in i:
if all(i in j[1] for i in a):
list2.append(j)
list1.append(list2)
list1
返回列表的空列表。 任何人都可以提供一个简单易懂的代码来获得我的预期输出。感谢。
答案 0 :(得分:3)
你的情况:
if all(i in j[1] for i in a):
询问a中的所有标记是否在j[1]
!中,然后仅附加该项。但最多只有一个(给定你的数据),这就是为什么你得到一个空列表。相反,你想要:
In [32]: from operator import itemgetter
...: list1=[]
...: a = ['VBG', 'RB', 'NNP']
...: for sub in data:
...: tags = set(map(itemgetter(1), sub))
...: if all(s in tags for s in a):
...: list1.append(sub)
...:
这会检查* a
中的所有项目是否都在tags
的子集列表中......
In [33]: list1
Out[33]:
[[('User', 'NNP'),
('is', 'VBG'),
('not', 'RB'),
('able', 'JJ'),
('to', 'TO'),
('order', 'NN'),
('products', 'NNS'),
('from', 'IN'),
('iShopCatalog', 'NN'),
('Coala', 'NNP'),
('excluding', 'VBG'),
('articles', 'NNS'),
('from', 'IN'),
('VWR', 'NNP')],
[('But', 'CC'),
('articles', 'NNP'),
('from', 'VBG'),
('all', 'RB'),
('other', 'JJ'),
('suppliers', 'NNS'),
('are', 'NNP'),
('not', 'VBG'),
('orderable', 'RB')]]
答案 1 :(得分:2)
这个解决方案可能看起来很奇怪,但它确实有效:
a = set(a)
def match(x):
words,tags = zip(*x)
return set(tags) & a == a
list(filter(match,data))
#[[('User', 'NNP'), ('is', 'VBG'), ('not', 'RB'), ('Coala', 'NNP'),
# ('excluding', 'VBG'), ('VWR', 'NNP')], [('Arfter', 'NNP'),
# ('transferring', 'VBG'), ('COALA', 'NNP'), ('Category', 'NNP'),
# ('S9901', 'NNP'), ('Dummy', 'NNP')], [('not', 'RB')], [],
# [('POETcatalog', 'NNP')], [('Vendor', 'NNP'), ('VWR', 'NNP'),
# ('COALA', 'NNP')], [('articles', 'NNP'), ('from', 'VBG'), ('all', 'RB'),
# ('are', 'NNP'), ('not', 'VBG'), ('orderable', 'RB')], [('already', 'RB'),
# ('COALA', 'NNP')], [('User', 'NNP'), ('Universitaet', 'NNP'),
# ('Regensburg', 'NNP'), ('Scout', 'NNP'), ('P17', 'NNP'),
# ('YESRMCDMUSER01', 'NNP'), ('Merck', 'NNP'), ('KGaA', 'NNP')],
# [('Please', 'NNP')]]