[英]Extract words from sentence in python
我有一个text / csv文件格式的数据集。 它有2列,像这样=
ID - TEXT
1 - this probability is 10-15%
2 - approximately 20% probablity
3 - 15% probability
我正在尝试使用NLTK从存在关键字'Probability'
的数据中提取数字。
这就是我的代码。
import pandas as pd
import nltk
from nltk import sent_tokenize, word_tokenize
data_file = pd.read_excel(r'data_excel.xlsx',sheet_name = 'data')
df = pd.DataFrame(data_file, columns = ['ID','TEXT'])
keywords = ["probability"]
id_text = nltk.Text(str(df.ID).splitlines())
text_value = nltk.Text(str(df.TEXT).splitlines())
我希望输出看起来像这样-
ID - Value
1 - 10
2 - 20
3 - 15
如果有人可以向正确的方向轻推,那将非常有帮助。
此代码应该起作用,或者至少可以解决它, 这是完整的代码
import csv
import nltk
impor re
import pandas as pd
from nltk import sent_tokenize, word_tokenize
tweet = []
data_file = pd.read_excel(r'data_excel.xlsx',sheet_name = 'data')
df = pd.DataFrame(data_file, columns = ['ID','TEXT'])
cols = ['ID', 'Num']
newDataFrame = pd.DataFrame(columns=cols)
#this should provide you with a list of both ID and txt
ID = df.iloc[:,0].values
TEXT = df.iloc[:,1].values
#loop throug the id and set occurence of the number of probability
for i in range(1, len(ID)):
number_list = re.findall(r'\b\d+\b', TEXT[i])
newDataFrame.iloc[i].ID = ID
newDataFrame.iloc[i].Num = number_list
print(newDataFrame)
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