以下代码允许我检查ttext
中是否只有一个列表元素。
from itertools import product, chain
from string import punctuation
list1 = ['abra', 'hello', 'cfre']
list2 = ['dacc', 'ex', 'you', 'fboaf']
list3 = ['ihhio', 'oih', 'oihoihoo']
l = [list1, list2, list3]
def test(l, tt):
counts = {word.strip(punctuation):0 for word in tt.split()}
for word in chain(*product(*l)):
if word in counts:
counts[word] += 1
if sum(v > 1 for v in counts.values()) > 1:
return False
return True
Output:
In [16]: ttext = 'hello my name is brian'
In [17]: test(l,ttext)
Out[17]: True
In [18]: ttext = 'hello how are you?'
In [19]: test(l,ttext)
Out[19]: False
现在,如果我在列表的元素中有空格,我怎么能这样做?"我有","你是"和"他是"?
答案 0 :(得分:0)
你可以添加一个列表理解,并将所有单词分开:
def test(l, tt):
counts = {word.strip(punctuation):0 for word in tt.split()}
splitl = [[word for item in sublist for word in item.split(' ')] for sublist in l]
for word in chain(*product(*splitl)):
if word in counts:
counts[word] += 1
if sum(v > 1 for v in counts.values()) > 1:
return False
return True
答案 1 :(得分:0)
通过使用“+”连接列表而不是列表列表,可以简化很多操作。如果字符串中包含空格,则此代码也会生成单词。
import string
list1 = ['abra', 'hello', 'cfre']
list2 = ['dacc', 'ex', 'you', 'fboaf']
list3 = ['ihhio', 'oih', 'oihoihoo']
l = list1 + list2 + list3
def test(l, tt):
count = 0
for word in l:
#set of all punctuation to exclude
exclude = set(string.punctuation)
#remove punctuation from word
word = ''.join(ch for ch in word if ch not in exclude)
if word in tt:
count += 1
if count > 1:
return False
else:
return True
答案 2 :(得分:0)
您可以考虑使用sets进行此类处理。
这是一个快速实施:
from itertools import chain
from string import punctuation
list1 = ['abra', 'hello', 'cfre']
list2 = ['dacc', 'ex', 'you', 'fboaf']
list3 = ['ihhio', 'oih', 'oihoihoo']
l = list(chain(list1, list2, list3))
words = set(w.strip(punctuation) for word in l for w in word.split()) # 1
def test(words, text):
text_words = set(word.strip(punctuation) for word in text.split()) # 2
return len(words & text_words) == 1 # 3
很少有评论:
答案 3 :(得分:0)
您可以通过迭代来分割所有列表输入。类似的东西:
words=[]
for list in l:
for word in list:
string=word.split()
words.append(string)
答案 4 :(得分:0)
好吧,首先,让我们重写函数更自然:
from itertools import chain
def only_one_of(lists, sentence):
found = None
for item in chain(*lists):
if item in sentence:
if found: return False
else: found = item
return True if found not is None else False
这已经适用于你的约束,因为它只是寻找一些字符串item
作为sentence
的子字符串。它是否包含空格并不重要。但它可能会导致意想不到的结果。想象:
list1 = ['abra', 'hello', 'cfre']
list2 = ['dacc', 'ex', 'you', 'fboaf']
list3 = ['ihhio', 'oih', 'oihoihoo']
l = [list1, list2, list3]
only_one_of(l, 'Cadabra')
这会返回True
,因为abra
是Cadabra
的子字符串。如果这是你想要的,那么你就完成了。但如果没有,你需要重新定义item in sentence
的真正含义。所以,让我们重新定义我们的功能:
def only_one_of(lists, sentence, is_in=lambda i, c: i in c):
found = None
for item in chain(*lists):
if is_in(item, sentence):
if found: return False
else: found = item
return True if found not is None else False
现在,最后一个参数应该是一个函数,应用于两个返回True
的字符串,如果在第二个字符串中找到第一个字符串,或者在其他地方找到False
。
您通常想要检查项目是否在句子中作为单词(但是可以在中间包含空格的单词),所以让我们使用正则表达式来做到这一点:
import re
def inside(string, sentence):
return re.search(r'\b%s\b' % string, sentence)
当True
位于string
时,此函数会返回sentence
,但会将string
视为一个单词(正则表达式中的特殊序列\b
代表字边界)。
因此,以下代码应该通过您的约束:
import re
from itertools import chain
def inside(string, sentence):
return re.search(r'\b%s\b' % string, sentence)
def only_one_of(lists, sentence, is_in=lambda i, c: i in c):
found = None
for item in chain(*lists):
if is_in(item, sentence):
if found: return False
else: found = item
return True if found not is None else False
list1 = ['abra', 'hello', 'cfre']
list2 = ['dacc', 'ex', 'you', 'fboaf']
list3 = ['ihhio', 'oih', 'oihoihoo']
list4 = ['I have', 'you are', 'he is']
l = [list1, list2, list3, list4]
only_one_of(l, 'hello my name is brian', inside) # True
only_one_of(l, 'hello how are you?', inside) # False
only_one_of(l, 'Cadabra', inside) # False
only_one_of(l, 'I have a sister', inside) # True
only_one_of(l, 'he is my ex-boyfriend', inside) # False, ex and boyfriend are two words
only_one_of(l, 'he is my exboyfriend', inside) # True, exboyfriend is only one word