> To: tutor@python.org
> From: __pete...@web.de
> Date: Fri, 15 Jan 2016 17:37:25 +0100
> Subject: Re: [Tutor] str.strip strange result...?
>
> Jignesh Sutar wrote:
>
> > #python2.7
> >
> >>>> s="V01_1"
> >>>> s.strip("_1")
> > 'V0'
> >
> >
> > Wouldn't you expect the result to be "V01" ?
>
> str.strip() doesn't strip off a suffix or prefix; its first argument is
> interpreted as a character set, i. e. as long as s ends/starts with any of
> the characters "_" or "1", remove that.
>
> If you want to remove a suffix you have to write
>
> if suffix and s.endswith(suffix):
> s = s[:-len(suffix)]
Not sure which one is faster, but in this case I actually find a regex more
readable (!):
>>> re.sub(r"_1$", "", "V01_1")
'V01'
Without the $ sign may also do the trick, but:
>>> re.sub(r"_1", "", "V01_1_1")
'V01'
>>> re.sub(r"_1$", "", "V01_1_1")
'V01_1'
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