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Editorial Team
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Asked: 2026-05-30T18:39:23+00:00

I’m trying to find some very specific data in a string. The problem is

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I’m trying to find some very specific data in a string. The problem is I’m not finding all of the data with the current regex I’m using. Here is some sample data:

[img:2gcfa9cc]http://img823.imageshack.us/img823/3295/pokaijumonlogo.jpg[/img:2gcfa9cc]

Making these little guys into Kaiju monsters.  Again, I know nothing about them, other then which ones I thought would make for cool possible Kaiju (of the original 150) so here's Day 01

[b:2gcfa9cc][size=150:2gcfa9cc]BULBASAUR[/size:2gcfa9cc][/b:2gcfa9cc]
[i:2gcfa9cc]Feb 01[/i:2gcfa9cc]
[ddf2k12:2gcfa9cc]http://img853.imageshack.us/img853/2185/dailydrawfeb2012day01.jpg[/ddf2k12:2gcfa9cc]

Setting myself up with the same "parameters" as last year

I may be breaking my own Challenge rules right now but...well I started this last night and I couldn't just leave 'em out in the cold all unfinished 'n' shit.  

Obligatory Skyrim drawing.

[ddf2k12:2ytorpmj]http://4.bp.blogspot.com/-UIUSNXvnHz4/TynYf1BZ9oI/AAAAAAAAAl4/pRLHVP0Ny3U/s1600/01_cheatingcheaterwarmup1.jpg[/ddf2k12:2ytorpmj]

What I’m trying to get is the data between the ddf2k12 tags and the img tags. I’ve only worked on the ddf2k12 tags thus far (I figure the latter will be the former with img instead of ddf2k12) and out of the 1586 tags I should have found, I’m only getting 5. Here’s my regex:

ddf2k12_regex = '(\[[ddf2k12]+\:[A-Za-z0-9]+\])(.*?)(\[[ddf2k12]+\:[A-Za-z0-9]+\])'
ddf2k12_find = re.findall(ddf2k12_regex, post)

Obviously there’s something wrong with my regex, but after banging my head against a wall I can’t sort it out, so any help is appreciated. Thanks.

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1 Answer

  1. Editorial Team

    You will do yourself a big favor by breaking down that big regex into parts and use composition. This seems to work correctly, and it’s more obvious how to debug it.

    import re

start_tag =    '(\[{tagname}:[^\]]+\])'
end_tag = start_tag.replace('\[', '\[\/', 1)
content = '((?:.|\n)*?)' # The ?: indicates a non-capturing group.                                                                                             
tag = start_tag + content + end_tag

ddf_tag=tag.format(tagname='ddf2k12')

for match in re.findall(ddf_tag, post):
    print match
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