Question

我有一本字典，其中值对应于单词，其键对应于这些单词的类别。我想检查句子中是否存在这些单词/值，如果是，则返回类别/关键字，否则返回“其他”作为类别。

由于类别众多，因此代码应能够检查循环中每个句子的键值。

我写了一些东西，但是没有输出。我知道这是不正确的，但是我被困在这里。

for i in data:
    if dictio.values() in i:
        print (dictio.keys())

在上面的代码中，我只是打印类别，但是我想要一个函数，该函数将为句子中匹配的值返回键。

我的数据是：

data = ["my web portal is not working","online is better than offline", "i like going to pharmacy shop for medicines", 
       "web is the future", "i love apple"]

我的字典是：

dictio = {'fruits':['apple'], 'web': ['web', 'online']}

因此代码应检查句子中的（web / online / apple）并返回键/类别作为输出，即（Web / Fruits）

通过此代码，我得到输出：['web'，'web'，'web'，'fruits']

matches[]
for string in data:
   for category, words in dictio.items():
       for word in words:
           if word in string:
               matches.append(category)
               break
print(matches)

Answer 1

data = ["my web portal is not working","online is better than offline", "i like going to pharmacy shop for medicines", "web is the future", "i love apple"]
dictio = {'fruits':['apple'], 'web': ['web', 'online']}


for string in data: # iterate over each string
    matches = [] # Create a list to store the matches for this string

    for category, words in dictio.items(): #iterate over the keys/values to check each
        for word in words: # For each word
            if word in string: # Check if it appears in the string
                matches.append(category) #If it does then add the category to the matches
                break # Break to only add each category once at most

    print(matches) # print results

输出：

['web']
['web']
[]
['web']
['fruits']

更加简洁和“ pythonic”

for string in data: # iterate over each string
    matches = [] # Create a list to store the matches for this string

    for category, words in dictio.items(): #iterate over the keys/values to check each
        matches += set([category for word in words if word in string]) #Set will remove duplicates

    print(matches) # print results

Answer 2

尝试一下：

data = [
    "my web portal is not working",
    "online is better than offline",
    "i like going to pharmacy shop for medicines",
    "web is the future",
    "i love apple"
]
dictio = {
    'fruits': ['apple'],
    'web': [
        'web',
        'online'
    ]
}
matches = []
status = True

for string in data:
    status = True
    for key, values in dictio.items():
        for value in values:
            if value in string:
                matches.append(key)
                status = False
                break
    if status:
        matches.append('other')

print(matches)

输出：

['web', 'web', 'other', 'web', 'fruits']

根据句子中的字典值检查字典键

2 个答案: