Paddy wrote:
> George Sakkis wrote:
> > It's always striked me as odd that you can express negation of a single
> > character in regexps, but not any more complex expression. Is there a
> > general way around this shortcoming ? Here's an example to illustrate a
> > use case:
> >
> > >>> import re
> > # split with '@' as delimiter
> > >>> [g.group() for g in re.finditer('[EMAIL PROTECTED]', 'This @ is a @
> > >>> test ')]
> > ['This ', ' is a ', ' test ']
> >
> > Is it possible to use finditer to split the string if the delimiter was
> > more than one char long (say 'XYZ') ? [yes, I'm aware of re.split, but
> > that's not the point; this is just an example. Besides re.split returns
> > a list, not an iterator]
> >
> > George
>
> If your wiling to use groups then the following will split
>
> >>> [g.group(1) for g in re.finditer(r'(.+?)(?:@#|$)', 'This @# is a @# test
> >>> ')]
> ['This ', ' is a ', ' test ']
>
> - Paddy.
Here is another wrapping of the same finditer call that just allows you
to call .group() on the result
>>> class G(object):
... def __init__(self, x):
... def grp(x=x):
... return x
... self.group = grp
...
>>> [g.group() for g in (G(g.group(1)) for g in re.finditer(r'(.+?)(?:@#|$)',
>>> 'This @# is a @# test '))]
['This ', ' is a ', ' test ']
>>>
- Paddy.
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