roy at panix.com
Sat Jan 24 19:55:48 CET 2009
Sean Brown <sbrown.home@[spammy]gmail.com> wrote:
> The problem is it appears that python is escaping the \ in the regex
> because I see this:
> >>>reg = '\[\[(.*)\]\];'
The first trick of working with regexes in Python is to *always* use raw
strings. Instead of
reg = '\[\[(.*)\]\];'
reg = r'\[\[(.*)\]\];'
In this case, I think it ends up not mattering, but it's one less thing to
worry about. Next, when looking at something like
> >>> reg
it's hard to see exactly what all the backslashes mean. Which are real and
which are escapes? Try doing
>>> print reg
which gets you the str(reg) instead of repr(reg). Another trick when
you're not 100% what you're looking at is to explode the string like this:
>>> [c for c in reg]
['\\', '[', '\\', '[', '(', '.', '*', ')', '\\', ']', '\\', ']', ';']
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