Python单字符清理

Question

我想从文本中删除所有一个字符的单词。

例如：我想清除下面文本中所有加粗的字符。（a，？，d，*等），重新调整已清除的文本。

Lorem Ipsum只是个傀儡？印刷和排版行业的文本。自16世纪以来，Lorem Ipsum一直是业界标准的虚拟文本，当时一位不知名的印刷商拿起一个打印工具，将其拼凑成*字体样本书。它不仅存活了五个世纪，而且还跨越到[电子排版]，基本上保持不变。

Answer 1

使用正则表达式：

re.sub(r'((?:^|(?<=\s))\S\s|\s\S(?:$|(?=\s)))', '', inputtext)

这将删除文本开头或前面有空格的任何一个非空格字符，后跟一个空格字符（也已删除），或一个空格字符后跟一个非空格字符（位于文本末尾或后跟空格）。

这可以确保一个字符周围的空白也被正确删除。

演示：

>>> import re
>>> inputtext = '''\
... Lorem Ipsum is simply a dummy ? text | of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it d to make * type specimen book. It has survived not only five centuries, but also the leap into [ electronic typesetting, remaining essentially unchanged.
... '''
>>> re.sub(r'((?:^|(?<=\s))\S\s|\s\S(?:$|(?=\s)))', '', inputtext)
"Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took galley of type and scrambled it to make type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged.\n"