如何过滤掉python中的单词？

Question

例如:

item =['the dog is gone', 'the dog and cat is gone']
words= ['dog','cat'] 

我希望能够过滤掉它dog,cat所以它会读取:

item=['the  is gone', 'the   and  is gone']

item1=[] 
for w in words:
   for line in item:
      if w in line:
         j=gg.replace(it,'')
         item1.append(j)

我得到以下内容:

['the  is gone', 'the cat and  is gone', 'the  and dog is gone']

Answer 1

你循环遍历每个单词的所有行并附加替换.你应该切换这些循环:

item1 = [] 
for line in item:
    for w in words:
        line = line.replace(w, '')
    item1.append(line)

注意:我改变了一些代码

• 变成gg了line
• 变成it了item
• 删除了检查是否line包含w由处理的replace

replace不了解单词边界.如果您只想删除整个单词,您应该尝试不同的方法.运用re.sub

import re

item1 = [] 
for line in item:
    for w in words:
        line = re.sub(r'\b%s\b' % w, '', line)  # '\b' is a word boundry
    item1.append(line)