从字符串中去除标点的最佳方法

Question

从字符串中去除标点的最佳方法

829

看起来应该有比这更简单的方法：

import string
s = "string. With. Punctuation?" # Sample string 
out = s.translate(string.maketrans("",""), string.punctuation)

有吗？

- Lawrence Johnston

4

我觉得这很简单明了。你为什么想要改变它？如果你想让它更容易，只需将你刚刚写的内容放入一个函数中即可。 - Hannes Ovrén

3

嗯，似乎使用 str.translate 的副作用来完成工作有点笨拙。我认为可能会有类似于 str.strip(chars) 的更好的方法来处理整个字符串而不仅仅是我错过的边界部分。 - Redwood

64

取决于你所指的标点符号。"The temperature in the O'Reilly & Arbuthnot-Smythe server's main rack is 40.5 degrees." 包含了一个标点符号，即第二个句点。请注意不要改变原意。 - John Machin

43

我很惊讶没有人提到 string.punctuation 根本不包括非英文标点符号。我在想的是“。”、“！”， “？”、“：”、“×”、““”、“””、〟等等。 - Clément

2

@JohnMachin 你忘了 ' ' 是标点符号。 - Wayne Werner

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32个回答

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- Isayas Wakgari Kelbessa · Answer 1

使用Python从文本文件中删除停用词。

print('====THIS IS HOW TO REMOVE STOP WORS====')

with open('one.txt','r')as myFile:

    str1=myFile.read()

    stop_words ="not", "is", "it", "By","between","This","By","A","when","And","up","Then","was","by","It","If","can","an","he","This","or","And","a","i","it","am","at","on","in","of","to","is","so","too","my","the","and","but","are","very","here","even","from","them","then","than","this","that","though","be","But","these"

    myList=[]

    myList.extend(str1.split(" "))

    for i in myList:

        if i not in stop_words:

            print ("____________")

            print(i,end='\n')

- Disk Giant · Answer 2

我喜欢使用这样的函数：

def scrub(abc):
    while abc[-1] is in list(string.punctuation):
        abc=abc[:-1]
    while abc[0] is in list(string.punctuation):
        abc=abc[1:]
    return abc