Le mercredi 28 août 2013 18:44:53 UTC+2, John Levine a écrit :
> I have a crufty old DNS provisioning system that I'm rewriting and I
>
> hope improving in python. (It's based on tinydns if you know what
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> that is.)
>
>
>
> The record formats are, in the worst case, like this:
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>
>
> foo.[DOM]::[IP6::4361:6368:6574]:600::
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>
>
> What I would like to do is to split this string into a list like this:
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>
>
> [ 'foo.[DOM]','','[IP6::4361:6368:6574]','600','' ]
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>
>
> Colons are separators except when they're inside square brackets. I
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> have been messing around with re.split() and re.findall() and haven't
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> been able to come up with either a working separator pattern for
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> split() or a working field pattern for findall(). I came pretty
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> close with findall() but can't get it to reliably match the
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> nothing between two adjacent colons not inside brackets.
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>
>
> Any suggestions? I realize I could do it in a loop where I pick stuff
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> off the front of the string, but yuck.
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>
>
> This is in python 2.7.5.
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>
>
> --
>
> Regards,
>
> John Levine, jo...@iecc.com, Primary Perpetrator of "The Internet for
> Dummies",
>
> Please consider the environment before reading this e-mail. http://jl.ly
----------
Basic idea: protect -> split -> unprotect
>>> s = 'foo.[DOM]::[IP6::4361:6368:6574]:600::'
>>> r = s.replace('[IP6::', '***')
>>> a = r.split('::')
>>> a
['foo.[DOM]', '***4361:6368:6574]:600', '']
>>> a[1] = a[1].replace('***', '[IP6::')
>>> a
['foo.[DOM]', '[IP6::4361:6368:6574]:600', '']
jmf
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