Kristian Evensen wrote:
> What I want to do is to check for two patterns to make sure all
> occurrences of pattern1 and pattern2 come in the same order as they do
> in the file I parse. It it contains a number of computer-games I would
> like the output to look something like this:
>
> PC, Battlefield, Battlefield2
>
> PS2, Battlefield 2: Modern Combat.
>
>
>
> The file is constructed somewhat similar to this:
>
> PC
> Battlefield, Battfiled2
> PS2
> Battlefield 2: Modern Combat
Are you trying to *check* that the data is in this format, or are you trying to
read this format and output a different format?
If the data is really this simple you can just iterate over the lines in pairs:
f = open('myfile.txt')
fi = iter(f)
for line in fi:
nextline = fi.next()
print '%s, %s' % (line.strip(), nextline.strip())
You could add code to the loop to check that the data is in the expected format.
> Using the following expression (and re.findall) I get somewhat closer:
>
> pattern8 = re.compile(r'search.asp\?title=battlefield.*?><.*?>(PCCD|XBOX
> 360|XBOX|PLAYSTATION PSP|PLAYSTATION 2) -
> TITLE<|game.asp\?id=(\d+).*?><.*?><.*?>(.*?)<')
>From this regex it looks like the data is actually in XML. You might want to
>use an XML parser like ElementTree or BeautifulSoup to parse the file, then
>extract the data from the resulting tree.
If neither of these suggestions helps, please post a sample of your actual
data, the actual results you want, and the code you have so far.
Kent
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