arrays - Count words in list of strings based on words array and making dictionary from it

Question

I have a list of strings as:

string_list=['philadelphia court excessive disappointed court hope','hope jurisdiction obscures acquittal court','mention hope maryland signal held problem internal reform life bolster level grievance']

and a list of words as:

words=['hope','court','mention','maryland']

Now, all I want to get the count of list words occurance within list of strings into seperate dictionary with key as 'doc_(index) and values as nested dictionary with key as occured words and value as counts. Output expected as:

words_dict={'doc_1':{'court':2,'hope':1},'doc_2':{'court':1,'hope':1},'doc_3':{'mention':1,'hope':1,'maryland':1}}

what I did first step as:

docs_dict={}
count=0
for i in string_list:
    count+=1
    docs_dic['doc_'+str(count)]=i
print (docs_dic)

{'doc_1': 'philadelphia court excessive disappointed court hope', 'doc_2': 'hope jurisdiction obscures acquittal court', 'doc_3': 'mention hope maryland signal held problem internal reform life bolster level grievance'}

After this, I'm not able to get how I can get the word counts. What I did so far as:

docs={}
for k,v in words_dic.items():
    split_words=v.split()
    for i in words:
        if i in split_words:
            docs[k][i]+=1
        else:
            docs[k][i]=0

标签： arrayspython-3.xdictionary

Answer 1

您可以在 python 中使用count来获取句子中的字数。

检查此代码：

words_dict = {}
string_list=['philadelphia court excessive disappointed court hope','hope jurisdiction obscures acquittal court','mention hope maryland signal held problem internal reform life bolster level grievance']
words_list=['hope','court','mention','maryland']
for i in range(len(string_list)): #iterate over string list
    helper = {} #temporary dictionary
    for word in words_list: #iterate over word list
        x = string_list[i].count(word) #count no. of occurrences of word in sentence
        if x > 0:
            helper[word]=x
    words_dict["doc_"+str(i+1)]=helper #add temporary dictionary into final dictionary

#Print dictionary contents
for i in words_dict:
    print(i + ": " + str(words_dict[i]))

上述代码的输出是：

doc_3: {'maryland': 1, 'mention': 1, 'hope': 1}                                                                                                                                     
doc_2: {'court': 1, 'hope': 1}                                                                                                                                                      
doc_1: {'court': 2, 'hope': 1}