python - 如何在python的for循环中修改单词

Question

我试图用 SnowballStemmer 在 python 中阻止一些文本，但它不会工作。这是代码：

import nltk
from nltk import SnowballStemmer

stem = SnowballStemmer("spanish")

def limpiar (texto):
  texto = texto.split()
  stemm = SnowballStemmer('spanish')
  for palabra in texto:
    palabra = stem.stem(palabra.lower())
    
  return texto

它以小写字母返回文本，但没有词干

Answer 1

将起作用：

import nltk
from nltk.stem.snowball import SnowballStemmer

def limpiar(texto):
    words=texto.split()
    stem_words=[]
    for w in words: 
        x = snow_stemmer.stem(w) 
        stem_words.append(x) 

    #print stemming results 
    for e1,e2 in zip(words,stem_words): 
        print(e1+' ----> '+e2.lower())

snow_stemmer = SnowballStemmer(language='spanish')
texto="..."
limpiar(texto)