python-3.x - 如何从python中的列表中删除单词

Question

我到目前为止已经完成了我的代码，但是与remove()一起无法正常工作。任何人都可以帮助我..

'''
Created on Apr 21, 2015

@author: Pallavi
'''
from pip._vendor.distlib.compat import raw_input
print ("Enter Query")
str=raw_input()  

fo = open("stopwords.txt", "r+")
str1 = fo.read();
list=str1.split("\n");
fo.close()
words=str.split(" ");
for i in range(0,len(words)):
    for j in range(0,len(list)):
        if(list[j]==words[i]):
            print(words[i])
            words.remove(words(i))

这是错误:

Enter Query
let them cry try diesd
let them try
Traceback (most recent call last):
  File "C:\Users\Pallavi\workspace\py\src\parser.py", line 17, in <module>
    if(list[j]==words[i]):
IndexError: list index out of range

Answer 1

您遇到的错误(除了我的其他评论)是因为您在迭代列表时正在修改列表。但是，您从一开始就使用列表的长度，因此，在删除了一些元素之后，您将无法访问最后的位置。

我会这样:

words = ['a', 'b', 'a', 'c', 'd']
stopwords = ['a', 'c']
for word in list(words):  # iterating on a copy since removing will mess things up
    if word in stopwords:
        words.remove(word)

使用 list comprehensions的更加Python化的方式:

new_words = [word for word in words if word not in stopwords]