我编写了一个函数,稍后我想将其应用于数据框。
def get_word_count(text,df):
#text is a lowercase list of words
#df is a dataframe with 2 columns: word and count
#this function updates the word counts
#f=open('stopwords.txt','r')
#stopwords=f.read()
stopwords='in the and an - '
for word in text:
if word not in stopwords:
if df['word'].str.contains(word).any():
df.loc[df['word']==word, 'count']=df['count']+1
else:
df.loc[0]=[word,1]
df.index=df.index+1
return df
然后我检查一下:
word_df=pd.DataFrame(columns=['word','count'])
sentence1='[first] - missing "" in the text [first] word'.split()
y=get_word_count(sentence1, word_df)
sentence2="error: wrong word in the [second] text".split()
y=get_word_count(sentence2, word_df)
y
我得到以下结果:
Word Count [first] 2 missing 1 "" 1 text 2 word 2 error: 1 wrong 1
那么 sentence2 中的 [second] 在哪里?
如果省略方括号之一,则会收到错误消息。如何处理带有特殊字符的单词?请注意,我不想摆脱它们,因为如果这样做,我会错过 sentence1 中的“” 。
答案 0 :(得分:0)
问题出在那一行:
{
"some_variable": "3a1821d0",
"foo": "https://<some_variable>.ngrok.io/api/foo",
"bar": "https://<some_variable>.ngrok.io/api/bar"
}
这将报告const fs = require('fs');
let fileContent = fs.readFileSync('input.json', "utf-8");
let content = JSON.parse(fileContent);
const someVariable = content.some_variable;
// I'm adding null and 4 to keep the file beautified
let fileContentStr = JSON.stringify(content, null, 4);
// This line replaces all ocurrences of <some_variable> by "some_variable" content
fileContentStr = fileContentStr.split('<some_variable>').join(someVariable);
// Write file again
fs.writeFileSync('output.json', fileContentStr);
列中的任何单词包含给定的单词。当给出if df['word'].str.contains(word).any():
并将其与具体的word
进行比较时,来自df['word'].str.contains(word)
的DataFrame报告True
。
为了快速解决,我将行更改为:
[second]
答案 1 :(得分:0)
不建议在这样的循环中创建DataFrame,您应该执行以下操作:
stopwords='in the and an - '
sentence = sentence1+sentence2
df = pd.DataFrame([sentence.split()]).T
df.rename(columns={0: 'Words'}, inplace=True)
df = df.groupby(by=['Words'])['Words'].size().reset_index(name='counts')
df = df[~df['Words'].isin(stopwords.split())]
print(df)
Words counts
0 "" 1
2 [first] 2
3 [second] 1
4 error: 1
6 missing 1
7 text 2
9 word 2
10 wrong 1
答案 2 :(得分:0)
我已经重新构建它,您可以添加句子并看到频率不断增加
from collections import Counter
from collections import defaultdict
import pandas as pd
def terms_frequency(corpus, stop_words=None):
'''
Takes in texts and returns a pandas DataFrame of words frequency
'''
corpus_ = corpus.split()
# remove stop wors
terms = [word for word in corpus_ if word not in stop_words]
terms_freq = pd.DataFrame.from_dict(Counter(terms), orient='index').reset_index()
terms_freq = terms_freq.rename(columns={'index':'word', 0:'count'}).sort_values('count',ascending=False)
terms_freq.reset_index(inplace=True)
terms_freq.drop('index',axis=1,inplace=True)
return terms_freq
def get_sentence(sentence, storage, stop_words=None):
storage['sentences'].append(sentence)
corpus = ' '.join(s for s in storage['sentences'])
return terms_frequency(corpus,stop_words)
# tests
STOP_WORDS = 'in the and an - '
storage = defaultdict(list)
S1 = '[first] - missing "" in the text [first] word'
print(get_sentence(S1,storage,STOP_WORDS))
print('\nNext S2')
S2 = 'error: wrong word in the [second] text'
print(get_sentence(S2,storage,STOP_WORDS))