python - 为什么此 string.punctuation 代码不适用于剥离标点符号？

Question

我很困惑为什么这段代码不能按我想要的方式工作。我正在读取 txt 文件并将每个项目(逗号分隔)打印到新行上。每个项目都用“”包围，并且还包含标点符号。我正在尝试删除这个标点符号。我熟悉 string.punctuation 并让它在我的示例中进行测试，但它在我循环的项目上失败，请参见下文:

def read_word_lists(path):
    import string
    with open(path, encoding='utf-8') as f:
        lines = f.readlines()
        for line in lines[0].split(','):
            line = str(line)
            line = line.strip().lower()
            print(''.join(word.strip(string.punctuation) for word in line))
            print(line)
            print(''.join(word.strip(string.punctuation) for word in '"why, does this work?! and not above?"'))

                
read_word_lists('file.txt')

结果是这样的:

trying to strip punctuation:  “you never”
originial:  “you never”
test:  why does this work and not above
trying to strip punctuation:  “you always
originial:  “you always"
test:  why does this work and not above
trying to strip punctuation:  ” “your problem is”
originial:  ” “your problem is”
test:  why does this work and not above
trying to strip punctuation:  “the trouble with you is”
originial:  “the trouble with you is”
test:  why does this work and not above

有什么想法为什么“尝试删除标点符号”输出不起作用？

编辑

如果有用的话，原始文件如下所示:

“你永远不会”，“你总是”，”“你的问题是”，“你的麻烦是”

Answer 1

您正在尝试删除 unicode 标点符号，而 string.punctuation 仅包含 ascii 标点符号。

您可以使用下面的代码来生成包含所有 Unicode 标点符号的字符串，而不是使用 string.punctuation:

import unicodedata
import sys

punctuation = "".join((chr(i) for i in range(sys.maxunicode) if unicodedata.category(chr(i)).startswith('P')))

祝你好运!