Regular Expression bug?
jose isaias cabrera
jicman at gmail.com
Thu Mar 2 14:38:27 EST 2023
On Thu, Mar 2, 2023 at 2:32 PM <2QdxY4RzWzUUiLuE at potatochowder.com> wrote:
>
> On 2023-03-02 at 14:22:41 -0500,
> jose isaias cabrera <jicman at gmail.com> wrote:
>
> > For the RegExp Gurus, consider the following python3 code:
> > <code>
> > import re
> > s = "pn=align upgrade sd=2023-02-"
> > ro = re.compile(r"pn=(.+) ")
> > r0=ro.match(s)
> > >>> print(r0.group(1))
> > align upgrade
> > </code>
> >
> > This is wrong. It should be 'align' because the group only goes up-to
> > the space. Thoughts? Thanks.
>
> The bug is in your regular expression; the plus modifier is greedy.
>
> If you want to match up to the first space, then you'll need something
> like [^ ] (i.e., everything that isn't a space) instead of that dot.
Thanks. I appreciate your wisdom.
josé
--
What if eternity is real? Where will you spend it? Hmmmm...
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