Question

neg=['no','not',"don't",'have no interest in']
verb=['like','love','want']
senten=['I love apples.', 'I do not like grapes', 'I have no interest in wanting bananas.','No love for cars']

我想知道我的观点是正面还是负面。如果senden中的字符串仅包含动词，则打印“ 1”。但是如果neg在动词之前出现，我会给它加上“ -1”。

示例：

like +1
love +1
want +1
no like -1
not want -1
don't love -1

代码：

for j in senten:
    j=j.lower()
    if any(x in j for x in verb):
        first_match = list(filter(lambda x: x in j, verb))[0]
        loca=j.find(first_match)  #location of the first word
        #the sentence might be too short.
        if int(loca)<=3:
            if j[int(loca)-3:int(loca)-1]== "no": 
                print(j)
                print(-1)
                continue
        elif int(loca)<=4:
            if j[int(loca)-3:int(loca)-1]== "no" or j[int(loca)-4:int(loca)-1]== "not":
                print(j)
                print(-1)
                continue
        elif int(loca)<=6:
            if j[int(loca)-3:int(loca)-1]== "no" or j[int(loca)-4:int(loca)-1]== "not" or j[int(loca)-6:int(loca)-1]== "don't":
                print(j)
                print(-1)
                continue
        elif int(loca)<=22:
            if j[int(loca)-3:int(loca)-1]== "no" or j[int(loca)-4:int(loca)-1]== "not" or j[int(loca)-6:int(loca)-1]== "don't" or j[int(loca)-20:int(loca)-1]== "have no interest in":
                print(j)
                print(-1) 
                continue                
        print(j)
        print(1)

我的代码没有错误，它会打印：

i love apples.
1
i do not like grapes
-1
i have no interest in wanting bananas.
-1
no love for cars
-1

但是我想请教一个更好的写法吗？因为我将在负数中添加更多的单词，我需要做大量的if或statement，这可能没有效率。谢谢：）

Answer 1

如果我理解正确，那么您正在寻找任何否定词，空格，动词。

for s in senten:
    for v in verb:
        for n in neg:
            if n + ' ' + v in s:
                print('found a negative')

Answer 2

您可以简化以下步骤：

neg=['no','not',"don't",'have no interest in']
verb=['like','love','want']
senten=['I love apples.', 'I do not like grapes', 'I have no interest in wanting bananas.','No love for cars', "There's no sun, but I still love the weather."]

for chk in senten:
    cnt=0
    for n in neg:
        for v in verb:
            if n+' '+ v in chk.lower():
                cnt+=1
    if cnt > 0:
        print("(-)", chk)
    else:
        print("(+)", chk)

结果将如下所示：

（+）我爱苹果。
（-）我不喜欢葡萄
（-）我对想要香蕉没有兴趣。
（-）不爱汽车
（+）没有阳光，但我仍然喜欢天气。

判别句子是肯定的还是否定的

2 个答案: