Question

这是我的代码片段，这是基本的，我知道！我开始冒险进入正则表达式了。当我运行下面的内容时，一切正常，但我想知道如何缩小连字符和字符串替换之间的间隙，例如，如果它指出一天的持续时间，例如“8小时工作日”现在写着“8-BOOGIE日”，我想关闭那个空间。请帮忙！

import re

short_par = 'You must pace your work. What do I mean? I’m glad you asked that. We pace our work according to the eight-hour workday. If you have twelve hours of work in your in-box, for example, you must compress that work into the eight-hour day. If you have one hour of work in your in-box, you must expand that work to fill the eight- hour day. That was a good question. Feel free to ask questions. Ask too many questions, however, and you may be let go.'

regex = re.compile('[hy]our')

print(regex.sub('BOOGIE', short_par))

Answer 1

您可以使用lookbehind：

(?:(?<=-) )?[hy]our

lookbehind (?<=-)检查是否存在破折号但与之不匹配。这很重要，因为我们不希望re.sub替换它。

如果找到破折号，(?:(?<=-) )?匹配后面的空格，以便它被替换。

python regex - 在re.sub之前删除空格

1 个答案: